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‘Tis the Season for Performance Transmission Upgrades

'Tis the Season for Performance Transmission Upgrades - Gearstar

It’s that time of the year when you get on the road with your friends and family. But don’t let a laggy ride drag you back, try some performance transmission upgrades that can turn your current car into your dream ride.

There is so much more a high-performance transmission coupled with a torque converter or drivetrain components can do for your vehicle, and for starters, it can improve its horsepower. All you need is DIU upgrades, and where you get stuck, you can employ the services of a professional to give your ride a boost even in the winter cold.

It’s the moment of celebration and as such, even the car you spend a few minutes in should bring you joy. If you agree, then these are the performance transmission upgrades you should try to enjoy the jingle bells season.

 

Why You Should Optimize Your Transmission for Increased Performance

Here are some reasons why your ride needs a performance transmission upgrade.

 

1. Engine Produces Torque that Can be Handled

Performance transmission upgrades are important for your car since it ensures that your engine does not produce more torque than what can be handled by the transmission. If that happens, a lot can go wrong which is usually evident in worn synchros, broken shafts, and bent forks.

 

2. More Power Can be Handled

It is also essential to upgrade your transmission so that it can handle more power, and the same applies to the transmission’s gear ratios to have increased performance. For instance, if you have a GM 4L60/E series transmission which was notably used in performance vehicles, it may not deliver to its best capability due to old-school mods.

Old-school mods are unable to improve the durability of your ride when it comes to extreme racing applications. Modern parts, on the other hand, are able to handle modern horsepower.

 

3. Improved Acceleration

A performance upgrade to the transmission can enable the engine to spend more time in the power band’s sweet spot. It is, however, worth noting that this might not impact the peak horsepower that is getting to the ground.

Nonetheless, the average horsepower that is put to the ground is increased thereby giving an improved acceleration that makes for a quicker 0-60, quarter mile or lap times.

 

Performance Transmission Upgrades

Your car’s power and ability to regulate heat all lie in its transmission and as such, this is such a powerful component. You would often need to do the following to get a good performance transmission upgrade:

  • Rebuild manual
  • Rebuild kit
  • Shift kit
  • Accumulator pistons
  • Separator plate
  • Torque converter

 

1. Rebuild

A great place to start is to replace or rebuild your transmission in a bid to improve its performance. It’ll be one that can handle payload more efficiently, and as such, what you’ll get is a faster and more powerful transmission. When it comes to rebuilding your transmission, you can rely on a car repair shop to do it for you.

In this case, your duty is to ensure that the shop uses the highest-quality OEM transmission parts and has skilled technicians to rebuild your current transmission. The result will be quite rewarding if either of these is in place since it’ll take a good technician to make the most of the quality parts you will be offered.

On the other hand, there are rebuild manuals for automatic transmissions, hence, if you want to do the upgrade yourself, you can be armed with one of these. A good resource manual centers on various aspects of how to work with the transmission in your car including the assembly, dis-assembly, diagnosis, troubleshooting, etc.

 

2. Rebuild Kits

There are also rebuild kits you can work with and if you choose to do it yourself, this type would prove useful. Let’s say you’re working with a 4L60E transmission, then you can settle for a standard better-than-stock kit with a molded piston kit or a high-performance rebuild kit.

Depending on which you settle for, it will determine the things you can do to your transmission and how well you can optimize your ride. The high-performance kit sometimes features the following: Raybestos Stage 1 clutches, a Kevlar band, a new filter, Kolene steel plates with 8 clutches 3-4 pack and a full bushing kit.

 

3. Shift Kits

Shift kits are also required in performance transmission upgrades. The 4L60E takes advantage of one of two kits most times, it is better to use one of two shift kits.

Some of these are the TRG-SK4L60E, and the TRG-4L60E-HD2. TRG-SK4L60E helps to prevent, correct, and reduce problems that may be associated with shift performance.

On the same note, it fixes harmonic bounce that may wear out the pump and valves and thereby, cause shuttle shifts.

 

4. Schedule a Transmission Upgrade

Now’s the time to take action, and schedule a transmission upgrade with a reliable company. In this case, you’ll be getting a high-performance transmission upgrade, and therefore good quality that can give a significant boost in your ride’s speed.

Moreover, such a company is one that has a high level of experience when it comes to high-performance transmission upgrades for vehicles. The same applies to whether it is an automatic or manual you are driving since the transmission in either of these can be upgraded.

 

5. Accumulator Pistons

There are also accumulator pistons that need to be replaced, and they are usually recommended in the case of a 4L60E rebuild. If they aren’t replaced, these may tend to ruin your transmission. In the 4L60E, a great place to start would be to replace the forward accumulator piston a well as the 1-2 accumulator piston.

 

The Bottom Line

Now it’s your turn to implement these performance upgrades on your car to improve its horsepower this season. The goal is to have a ride that can handle the impact of the winter given that this season is usually accompanied by snow and ice on roads.

And if you still want to transport easily, these tips can show you where to begin and the transmission in your car that is in dire need of upgrades. Therefore, don’t assume you’ve got the perfect ride, but go out there and do it.

 

Using This Vehicle Winter-Ready List, and Checking It Twice

Using This Vehicle Winter-Ready List, and Checking It Twice - Gearstar Performance

Winter’s here, and that means your ride needs to revamped to handle the ice, snow, and sleet on roads. A vehicle winter-ready list, for instance, will ensure that your car can withstand the harsh weather, thereby enabling you to drive smoothly and seamlessly as if it were summer.

Thus, winter won’t be something to detest since it does not mean you’ll be stuck indoors for hours unending without taking a therapeutic ride. So, how do you begin? Use the vehicle winter-ready and car maintenance checklist outlined below, and try these tips to ensure that your ride is ready for the weather.

 

Vehicle Winter-Ready and Car Maintenance Checklist

To protect your car, use this vehicle winter-ready list to help ensure a smooth along rough surfaces. Do the following below.

 

1. Check Your Windshield Wipers and Lights

The ability to see clearly as you drive through the snow is important, which is why you should check your windshield wipers if they are working properly. It’s even better if you replace the windshield wipers with winter blades that can help to wipe off the snow and ice that will be on the windshield.

Much more, a windshield washer tank with deicing fluid will remove the ice build-up and save you the extra time of waiting for it to defreeze. On the other hand, you also need to inspect your headlights and tail lights if they are working properly since it will provide good illumination when you’re out late.

You need to see the snow or ice clearly to maneuver through it, and if the lights are yellow or dim, clean the lenses or replace the bulbs entirely.

 

2. Protect Your Car’s Exterior

Did you know that you can winterize your vehicle’s exterior? It involves washing and waxing the car’s exterior to prepare it for winter. But here’s what it looks like:

It’s no surprise if you still have last season’s buildup on your car. That may be the case, but taking the step to scrub this build-up away can be useful.

Once that is in place, you can proceed to apply quality wax on the car to give it maximum protection against the impact of snow and road salt.

 

3. Maintain Your Car’s Battery

If you’re using the same battery from summer, the season’s heat could have affected the quality of the battery thereby causing it to be weak. This weakness is evident in the car’s inability to start on a very cold morning since the battery it totally drained.

On the other hand, you can ascertain the current state of your battery by performing a battery and charging system test. It will enable you to know if you need to purchase and replace the existing battery with a new one as a defense against the cold weather.

Nonetheless, a new battery may not guarantee that your car is safe proof for winter if you live in extremely cold areas. As such, the battery may have to be paired with a maintainer or trickle charger. Another thing you can try is to disconnect the battery from the car in a bid to prevent unnecessary power drainage.

 

4. Change Your Car’s Oil

Cars can either use synthetic or conventional oil, and synthetic oil has shown to offer several benefits over the latter especially in cold temperatures. For instance, synthetic oil warms up faster in comparison to conventional oil, and it also tends to flow freer at low temperatures.

As a result, the engine’s moving parts are protected immediately once the car is started. Cold weather starts are also easier when the car is running on synthetic oil.

That being the case, a winter vehicle maintenance you should also try is to change your car’s oil. In this case, use a full-synthetic oil that is appropriate for your car instead of relying on conventional oil it may currently have.

 

5. Examine Your Tires

A new set of snow tires for the winter is one more thing you should consider. But first, inspect your tires and if the treads don’t have enough depth, then you need a new pair.

The aim is to get as much traction as possible to enable the tires to handle the treacherous roadway conditions. Over and above that, it is expected that every 10-degree drop in air pressure could cause a decrease in tire pressure by one pound.

Hence, you also need to check the inflation of your tires, since an under-inflated tire can reduce handling and traction. It could also affect your vehicle’s fuel economy, asides from the obvious fact that the tires will tend to wear down faster.

 

6. Inspect Your Fuel Injectors

Clean fuel injectors can also make your ride powerful this winter. It all boils down to the fact that cold temperatures can cause performance issues to a vehicle’s fuel system. Some of these problems may be evident in hard starts and rough idling. The same can be said about the presence of water in the fuel system since it can spring up several issues.

This, therefore, brings about the need to maintain clean injectors, by employing a fuel injector cleaner. A cleaner of this nature will help with the restoration of lost power and prevent several performance issues from arising. All you have to do is add the fuel injector cleaner to the gas tank as you fill-up.

 

7. Check Your Antifreeze

An engine’s cooling system has a liquid that is made up of a blend of water and antifreeze. Antifreeze is an important winter chemical and it could contain ethylene glycol or propylene glycol. These chemical compounds in the antifreeze help to prevent freezing and expansion of water.

That being the case, you need to measure your car’s antifreeze strength using an antifreeze tester or let a mechanic do it on your behalf. The aim of the test is to determine the lowest ambient temperature of protection that is offered to the engine from freezing.

 

8. Inspect Your Car’s Thermostat and Radiator Cap

The thermostat and radiator cap are useful in the car’s heating and cooling system. The thermostat helps to provide the heat needed to the car, and if it fails, it can be attributed to the fact that the corrosion has occurred or the coolant has not been changed frequently.

On the other hand, the radiator helps to keep the antifreeze in your vehicle in place. It also ensures that the entire cooling system is pressurized, thereby increasing the boiling point of the coolant.

What’s more, it is important to check the radiator cap for any leakage signs or replace the cap with a new one if its been years already since you’ve used it. The reason is, a leaking radiator cap can lead to an overheating of the engine and leakage of antifreeze.

 

The Bottom Line

The vehicle winter-ready list is for car enthusiasts who want to maintain the full functionality of their ride and ensure that the cold does not impact on it. If that’s what you want, then employ these tips for a good winter-weather driving as if it were summer.

The requirements on this list are quite easy to implement, and you can also employ the services of a professional to ensure you get them all right. Now, you can drive seamlessly without the fear that your vehicle could potentially break down this winter.

Overview of the 2004R Transmission

verview of the 2004R Trasmission - Gearstar Performance

It is quite common to find 2004R transmissions in salvage yards and its replacement parts in several auto part stores. The popularity of this transmission has been evident despite it being the lesser-known of two GM overdrive transmissions from the 1980’s – it has also been almost over three decades since it was launched.

What’s more, if you were going to upgrade your classic muscle car’s Powerglide two-speed or TH-350 three-speed transmission, then the better option will be the 2004R since it is a perfect fit for the build. On the same note, the 2004R would be the ideal transmission to use if you were trying to upgrade to your old muscle car in a bid to get more punch and improved fuel economy.

Now, here’s an overview of the 2004R transmission that will give you more understanding of what this transmission offers.

 

2004R Transmission Spotlight

The 2004R is a four-speed automatic transmission that was launched by General Motors for the 1981 model year. This transmission can be used in several GM passenger cars since it was designed with a Chevrolet and a B-O-P bell housing bolt pattern. It was also produced with the Oldsmobile, Buick, and Pontiac patterns.

This transmission’s driveshaft, bell housing, and mechanical speedometer enabled it to be a perfect fit for vintage cars. What’s more, the 2004R’s sturdy build and torque capacity make it a better non-electronic overdrive transmission for GM classic cars.

 

History of the 2004R

The 2004R was designed to be a continuation of the Turbo Hydramatic line of GM transmissions. This automatic overdrive transmission could be found in high-power GM trucks and cars such as Pontiac Firebird Trans-Am and Buick Grand National.

On the other hand, the production of the 2004R  was discontinued in 1990, and the transmission was replaced with the 700R4, and iterations of the latter including the 4L60 and 4L60-E.

 

2004R Transmission Powered Vehicles

The 2004R was used in several GM B-body vehicles – it was also employed in C-body vehicles, G-body vehicles, and D-body cars. Nonetheless, the cars that came with a 2004R transmission include:

    • 1981-84 Buick Electra
    • 1981-90 Buick Estate Wagon
    • 1983-87 Buick Regal
    • 1981-89 Cadillac Fleetwood
    • 1981-89 Chevrolet Caprice
    • 1984-87 Chevrolet Malibu
    • 1984-88 Chevrolet Monte Carlo
    • 1985-87 GMC Caballero
    • 1982-83 Jaguar ZR W L6 220 3.6L S S
    • 1986-90 Oldsmobile Custom Cruiser
    • 1983-89 Pontiac Parisienne

 

2004R Transmission Specs

    • Manufacturer: General Motors
    • Production Year: 1981 through 1990
    • Type: 3 Speed Automatic
    • Overdrive: Yes
    • Torque Converter Lock: Yes
    • Fluid Capacity: 11 Quarts
    • Speedometer Type: Mechanical
    • Pan Bolts: 13mm heads
    • First Gear Ratio: 2.74:1
    • Second Gear Ratio: 1.57:1
    • Third Gear Ratio: 1
    • Fourth Gear Ratio: .67:1
    • Reverse Gear Ratio: 2.07:1
    • Input Shaft: 27 spline
    • Output Shaft: 27 spline
    • Case Length: 27 11/16”
    • Outer Case Material: Aluminum, fused with bell housing
    • Weight: 118 pounds without the torque converter or ATF
    • Computer Controlled: No. Instead, it is controlled by TV Cable and a lock-up torque converter

 

2004R Identification

It’s quite easy to differentiate the 2004R transmission from the 700R4, TH350, and other transmissions that were made by General Motors. For starters, the transmission identification can be located on the plate on the right side of the case that is towards the tail shaft.

The plate has a two- or three-letter transmission code which is written in large letters. Another way you can go about it is to count the number of pan bolts of the transmission, and if it is 16, then it’s either the 2004R or 700R4.

But fret not, since there’s no confusion! The 2004R has pan bolts whose size tends to be smaller towards the end. In contrast, the 700R4 maintains almost a perfect square.

On the other hand, the 2004R may easily be confused with the TH350 since they feature the same dimension. Nonetheless, the TH350 has 13 bolts on its square transmission pan, which is considerably lower than the 16 bolts on the 2004R.

 

2004R vs. 700R4 vs. TH350

The 2004R transmission can be compared side by side with other two overdrive transmissions which were also made in the 1980’s – and these are the 700R4 and TH350. For starters, it is similar to the 700R4 even though it is the weaker variant of the 2004R/700R4 duo.

Needless to say, a 2004R transmission that was made towards the end of the production year is still better than an early 700R4. It is also worth pointing out that the 2004R was not necessarily meant to compliment the 700R4 since they achieved the same functionality.

This transmission was, however, fits into the engine bays of existing models where the 700R4 could not. On the other hand, the 700R4 has the same dimension and bell housing bolt pattern as the TH350, which made it interchangeable in vehicles that were designed for the TH350.

What this means is that classic cars that were originally built to use the TH350 three-speed transmission can easily swap to the 2004R without any major modifications being made. For instance, there’s no need to shorten the original driveshaft.

 

2004R Transmission Problems

One of the 2004R transmission problems is the transmission not going into gear. Here, the 2004R transmission may fail to go into gear even after the linkage has been hooked up properly.

It may not respond when you also try a test of shifting it through all the gears (R/D/3/2/1). Nonetheless, you can proceed to check the fluid level using the dipstick to ensure that there is enough fluid in the torque converter.

You also need to ensure that the shifter mechanism is working properly and the pump is moving fluid. Slipping could also occur when using the 2004R transmission and it could be a signal that your ride needs maintenance.

Slipping is usually evident in slow or delayed acceleration, hard shifting, or strange smells. Nonetheless, you need to check that the fluid level is not low and that the valve moves and returns freely.

 

The Bottom Line

An overview of the 2004R transmission shows that this transmission may have been replaced with newer transmissions, but it was still useful when installation space was a factor. It was a perfect fit in cars that used the TH350 transmission, and there was no need to carry out major modifications.

Also, several cars ranging from Buick, Cadillac, and Chevrolet used this transmission. What’s even more remarkable is the sturdy build of this transmission that makes it a good choice if you want to upgrade your old muscle car.

 

How High-Performance Transmissions Went From Zero to Hero

As technology advances, most products we are using on a regular basis are becoming more efficient. This enables them to offer us a higher level of performance. Transmissions are no exception to the rule. It is beneficial to understand what transmissions are, what their history is, and what you need to know when purchasing one of your own.

 

Transmission Talk

“Transmission” is a term that is used to describe the mechanism that channels all of the horsepower that is generated inside of your motor vehicle.

Imagine the way in which the power from your engine gets to your wheels. The motor is capable of making that power, but without the transmission, it would be useless. Add a transmission into the equation and then there is a fully-functional motor vehicle.

Your transmission can also enable you to quickly adjust gears via the clutch. The clutch plays a really important role because it is responsible for separating the engine from the transmission and then re-connecting them both when it is necessary. This is what allows the transmission to change gear ratios so that you do not have to shift gears manually.

 

A Brief History of Transmissions

You can trace the origins of what we would consider to be modern transmissions all the way back to the year 1904, when the Sturtevant brothers developed what was known as the ‘horseless carriage’ gearbox in Boston, Massachusetts. The unit that they created featured two forward speeds that could be changed by flyweights that were driven by the engine.

Naturally, a higher speed would make the high gear engage, while a lower speed would do the opposite. Unfortunately, the metallurgy in the early 1900s was not as good as it is today. This led to a number of these gearboxes failing without warning. Luckily, improvements have come a long way.

The early part of the 20th century would lead to a number of important developments in the field of mechanics. In 1906, Henry Ford would release a special two speed plus reverse transmission that could be manually controlled using pedals.

 

The Turning Point

But, it was not until 1932 that we would see the first transmissions using hydraulic fluid.  The inventors of the first transmission using hydraulic fluid is by two engineers, Araripe and Lemos, who then sold their creation to General Motors. However, in the Wall Street Journal, an article appeared crediting ZF Friedrichshafen for the invention.

By the 1960s, three-speed units that featured torque converters had become incredibly popular. At this point, whale oil is being taken out of transmission fluid, something that shows real ingenuity. Fast forward to the 1980s and the three-speed units were already evolving to overdrive-equipped transmissions. These new developments involved four or more different transmission speeds and a lock-up torque converter that would improve fuel economy.

As amazing as all of these improvements and inventions might sound, the really interesting things have occurred over the course of the past two decades. We have seen everything from the first six-speed transmission to the first nine-speed automatic transmission in this small window of time. We can only imagine that things will keep improving as more time passes.

 

What Should You Look for When Purchasing a Transmission?

Consider what you want before you begin considering purchasing a new transmission. You can put as much money as you want into your motor vehicle, but all of that money won’t mean a thing if your transmission decides that it is going to fail.

Because mainstream transmissions are so standard, majority of car garages will have them in stock. But, there is an alternative solution.

Question whether or not to invest in custom high-performance transmissions. High-performance transmissions are both designed and built to meet the exact specifications of your own car, ensuring that everything fits together and works in perfect harmony.

 

Are Transmissions Really THAT Important?

Without a transmission, you would not have the power that the engine generates from your car to the wheels. It would be impossible. Replacing a transmission can cost a lot of money. Because it’s costly to replace a transmission, it’s a good idea to provide it with regular maintenance.

If you want to customize your ride, consider looking into high-performance transmissions. Remember that the quality of transmissions is always improving. With these improvements, it is worth considering whether or not an upgrade would be worthwhile.

Transmission Tech Tips for Hard-Cornering, Fast Drivers

Performance Transmission Tech Tips for Hard-Cornering, Fast Drivers - Gearstar Performance

You have a high-performance vehicle alright, and you love to drive it fast and pull hard into corners. While that may give you the needed thrill and excitement, it could be causing a great deal of strain to your car’s OEM driveline and suspension fasteners.

The reason cannot be far-fetched since manufacturers have built these cars to handle regular driving. It’s evident in the quality of parts and the level of performance they can offer.

That is why putting more speed/force on the same load can take a toll on some components. Generally, high-stress environments can affect the reliability of the parts of your vehicle.

But hey, that can be kept at bay by having some important transmission tech tips that will ensure that while you get a great driving experience, that is not at the expense of your car’s functionality.

Tips to Maintain Quality Performance in Impact Driving

Here are some transmission tech tips that will enable you to maintain the quality of your ride. These are processes employed by Automotive Racing Products, Inc. (ARP), a manufacturer of car parts for racers and car builders.

ARP has designed and engineered several fasteners that can offer safety margins for a variety of applications. That being the case, you can find a repair shop that can also implement these changes on your vehicle.

1. Quality Wheel Studs

If you’re only going to pull your car on and off the road without trying out stunts, then the 8.8 or 10.9 rated metric studs it comes with is just right for it. The same can be said for the SAE equivalent Grade 5 (120,000 psi tensile strength) or Grade 8 (150,000 psi) the car comes with, which is suitable for normal driving.

On the contrary, if you’re going to be pulling 9 to 1.0+ G’s while driving a 3,500 – 4,000 lb. car, greater consideration has to be given since there are a lot of lateral forces that will be at play. What’s more, dumping the clutch at high RPM could multiply torque through the transmission and rear end, thereby leading to a strain on the studs.

These forces may take a toll on the ride, but the use of premium wheel studs can handle sideloads and ensure a breakdown does not happen. How’s that? You may wonder.

a. Using Quality Materials for Wheel Studs

Wheel studs that are made of quality materials are free of any laps, seams, or material impurities. This level of quality can be ensured by designing these materials from premium SDF/CHQ grades (which can be compared to aircraft quality) 8740 chrome-moly steel. The SDF in, this case, denotes that it is Seam and Defect Free.

b. Cold Forging of Wheel Studs

Asides from using quality materials to create wheel studs, the studs are cold-forged into an oversize blank. Which is then transferred to a heat treatment process- in a bid to attain a nominal rating of 190,000 psi.

The Wheel studs are then shot-peened, and CNC machined to a specific diameter and shape. Also, the threads are all rolled upon completion heat treating. It is worth noting that the threads are formed when the material is hard, instead of being cut or rolled before heat treating.

This way, the threads are of high quality.  They have a fatigue strength that is ten times higher than other threads that are designed using common commercial methods.

As a result, the resultant product has precision and tolerance. The wheel studs can now handle the tremendous shock loads that may be evident when the clutch is dumped at a high RPM.

2. Quality Bolts

Designing clutch/flywheel and converter/flexplate bolts to be of high quality instead of relying on commercial specifications that only harden the case can be highly beneficial.

Also, certain considerations have to be made. Such as the design of the ARP flywheel and flexplate bolt to feature a 12-point head design; a large shank diameter to provide increased strength and improved flywheel register.

The use of a design of this nature can save you a lot of trouble. Especially if you tend to dump the clutch a clutch at a high RPM. A clutch dumped at high RPMs poses several concerns, including the easy failure of the converter/flexplate fasteners or conventional clutch/flywheel within the bell housing.

What causes this failure can be associated with the load mounted on the bolts as the clutch engages at high RPMs. Much more, a stiffer clutch will be more impactful upon release. A possible solution to this problem is to use the high-quality bolts, that are not only hardened at the case.

3. Ring gear Bolts

Ring gear bolts can also be damaged since excessive shear loads can be more at the rear end. Nonetheless, the gear bolts that can handle the power will be susceptible to help to curb any potential issues.

Specifically, the use of premium grade 190,000 psi tensile strength bolts will prove useful. It is advisable to get bolts in bulk due to the range of application and custom nature of some installations.

Some options in the market are 10-32 x ½” bolts to as large as ½” by 6-inch bolts. The bolts can also be polished stainless steel, thereby making them less susceptible to rust and corrosion.

Transmission Tech Tips Conclusion

These are the transmission tech tips you should employ in ensuring that the components of your high-performance car stand the test of time. It also means that you do not have to sacrifice hard racing, pushing the RPMs, or hard turning in corners.

A car whose wheel studs and bolts are of high quality can  impact the level of performance that can be provided. That being the case, your ride will stand the test of time and serve you well in the long run.

Find a company that can put these transmission tech tips in place, all in a bid to revamp your ride. If you’re confident that it has been built to handle the power, then you can be more confident to give it hard turns.

10 Performance Upgrades Your Car Will Absolutely Thank You For

10 Performance Upgrades Your Car Will Absolutely Thank You For - Gearstar

What else can you be thankful for? The best performance upgrades that can transform your car into a fast and furious ride just by increasing its horsepower. There’s also the benefit of more torque for quicker passing, improved acceleration, and increased towing capacity.

Thus, your vehicle can be the ride to be on the lookout for, and probably one to emulate among hundreds out there. Now while this idea may sound good to you, the problem of where to begin may set in.

Nonetheless, we have outlined some of the best performance upgrades that will use your car’s functions optimally and, therefore, enable it to reach its full potential. The best part? These performance upgrades don’t require mechanic services; so long as you have a basic knowledge of car parts, you’re all set!

 

Simple Performance Upgrades for Cars

Below are some super simple performance upgrades that can boost and revamp your ride.

1. New Tires

New tires and good ones to begin with, can give your car more power, and as such, it is where you should begin if you want to improve your car’s performance significantly. Great tires will give your ride a greater grip on the road, and help to move swiftly along it. Hence, you can look forward to a pleasurable and smoother driving experience.

2. Engine Control Unit (ECU) Flash

A car’s ECU controls the air and fuel mixture (air-fuel ratio) in your engine, which helps to maximize the engine’s power and efficiency. However, manufacturer’s usually program this ECU to perform below the engine’s true capability as a precaution.

That being the case, you can improve the programming of the ECU that will help to unleash its full potential. The engine’s performance will be enhanced as well as the return on gas mileage.

3. Cold-Air Intake

The installation of a cold-air intake system helps to circulate the airflow in your car’s engine and also provides cooler and denser outside air into the engine. For this reason, cold-air intake can help to boost your car’s performance significantly. Its impact is evident in its ability to allow your car to breathe better and as such, drive better.

4. Spark Plugs

Spark plugs with great quality can aid in better combustion, and as such, it would mean more power and fuel economy in your ride. Pairing the two side by side can be extremely rewarding since you don’t get a ride with a high level of performance at the expense of low fuel consumption. But what about the old spark plugs you have? You may wonder.

While these may have also been great quality spark plugs, they could’ve become worn out due to wear and tear. As such, it could impact on the results delivered significantly. That being the case, you can try an affordable swap to new spark plugs on your new or old ride.

5. Bolt-In a High Flow Exhaust

A bolt-in a high flow exhaust will enable your car’s waste to be exited conveniently. And that can be compared to the removal of wastes from the human body! But in this case, your car needs to do the same.

When a bolt in a high flow exhaust is used, it reduces the pressure that is built up within the ride, and therefore, helps the driver to move more efficiently. A bolt also increases the removal process of waste.

6. Bushing Replacement

Bushings are rubber suspension components, and they are employed in providing cushioning, isolating vibration, and reducing friction between metal parts in the car. Manufacturers add rubber bushings which could get damaged easily and thereby cost you better performance of your car.

On the contrary, a replacement of these bushings can ensure that they stand the test of time to provide the level of support they should for a long time. You can, therefore, try polyurethane bushings that have been proven to last longer than rubber bushings. They also take it one step further in minimizing weight transfer and ending vibrations.

7. Forced Induction

A turbocharger or supercharger can help to increase your engine’s power output, and all it’ll take is to increase its horsepower. A turbocharger helps to force air at high speed into the engine. It needs the exhaust gases to build up as the RPMs increase.

In this case, you need to increase the efficiency of the existing turbo to have more engine power without affecting the OEM reliability. A supercharger comes with a belt-driven compressor, and they provide a power hit low in the RPM range.

8. Nitrous

Nitrous provides a temporary-boosting, cooling effect that enters the combustion chamber, which makes the air entering the chamber denser as well. As a result, there can be a more powerful burn that will help to push your ride forward. However, if you need 50 horsepower right away and not a couple of minutes of hours later, you can try a nitrous kit.

9. Camshafts

A performance camshaft, also known as a bump stick, can also be useful in increasing your car’s performance. The camshaft bears a resemblance to a metal stick with bumps at its circumference.

Here, the bumps are cam lobes that decide when air enters in and out of the combustion chamber since they open and close the intake and exhaust valves. Therefore, a change of the cam can improve horsepower significantly. The horsepower can be increased between 30 to 100.

10. Fine-Tune and Reprogram Computer-Controlled Systems

A hand-held reprogrammer in a computer-controlled engine can help to improve fuel delivery, advance timing, and the change shift points on automatic transmissions. Nonetheless, you will need to have a good idea of what you’re up to by following instructions strictly.

 

The Bottom Line

These are some of the best performance upgrades for car, which you’ll be thankful for after implementing them. They are quite easy to work with, and some require inexpensive components that can still turn your car into the ride it needs to.

Your ride can be fast, offer great fuel mileage, and have reliable components that won’t break down. Hence, you can resort to these upgrades when trying to improve the performance of your car.

Overview of the 700R4 Transmission

Overview of the 700R4 Transmission - Gearstar Performance

The 700R4 transmission is an automatic transmission that was found in GMC and Chevrolet cars and trucks. It was developed with the aim of improving fuel economy in cars, and it achieved this goal thanks to the overdrive it featured.

Over the years, the transmission has had a change of name, and there have been significant upgrades to its build. We’ve outlined an overview of the 700R4 transmission, its upgrades, problems, and what made it one of the best transmissions in its time.

 

GM’s 700R4 Transmission

The 700R4, also known as Turbo Hydra-Matic, is a 4-speed automatic transmission that was launched by General Motors in the early 1980s. It is an upgrade to the 3-speed TH350 automatic transmission and older models of rear-wheel-drive cars.

Also, the 700R4 transmission featured a 30% overdrive in 4th gear which brought about fuel economy. This overdrive allowed sports cars and pickup trucks that came with it to be more affordable to drive.

 

Vehicles Equipped the 700R4

The 700R4 transmission was used in cars between 1982 and 1993. Specifically, it could be found in trucks and rear-wheel-drive cars including:

Chevy

    • Blazer: 1982-1991
    • Caprice: 1982-1992
    • Corvette: 1982-1992
    • Camaro: 1983-1992
    • Suburban: 1984-1992
    • Astro Van: 1985-1992
    • S10 Blazer: 1989-1992
    • S10 Pickup: 1989-1991

Cadillac

    • Fleetwood: 1990-1992
    • Brougham: 1990-1992
    • Limousine: 1990-1992

GMC

    • Jimmy: 1982-1993
    • Safari Van: 1983-1990
    • Syclone: 1991-1992
    • S10 / S15 Sonoma: 1983-1991
    • S15 Pickup: 1983-1991

Others

    • Pontiac Firebird: 1983-1992
    • Buick Lesabre: 1984
    • Holden Commodore: 1988-1992

That being the case, the widespread use of the 700R4 (4L60) was 1992. Also, the 1993 Corvette, Camaro, and Typhoon were the vehicles to feature the last production of the 700R4.

 

Build of the 700R4

The 700R4 transmission is made from cast aluminium, which adds to its sturdiness and ruggedness. It’s 23.4 inches long, weighs 155 pounds, and has 16 bolts. The tail shaft housing is connected to the main case by four bolts, and the bolt spacing is comparable to that of the THM350 transmission. Dimensions of the 700R4 are:

    • 625 in. tail shaft housing.
    • Transmission’s width where it bolts to the engine is 20 in (51 cm).
    • 5 in. from the engine/trans mating surface to the cross member mount bolt.
    • 375 in. from the engine/trans surface to the output shaft housing mating surface.
    • External dimensions are the same as that of a THM350 with a 9-inch tail housing as found in the GMC long wheelbase truck/vans.

This transmission can store about 11 quarts of transmission fluid and its recommended fluid is DEXRON VI. That aside, there was a K-case 700R4 transmission, and this was the 700R4 with the label K on its case. The transmission case was stronger and thicker since it was designed for heavier 4×4 trucks used for off-roading.

 

700R4 Performance Specs

The 700R4 transmission first gear, second gear, third gear, fourth gear, and reverse gear are 3.06, 1.63, 1, 0.7, and 2.9 respectively.

Its lower first gear ratio provides excellent performance for low vehicle speeds. Besides, a 30% overdrive brings about enhanced fuel economy, a reason that can also be attributed to the popularity of the 700R4.

The torque that can be handled by a 700R4 transmission varies depending on its production year. Nonetheless, you can expect a max engine torque around 350 lb-ft and a max gearbox torque of 650 lb-ft.

 

700R4 Transmission Problems

Like other automatic transmissions, the 700R4 transmission problems are also evident in certain cases. Some of these issues include:

1. Overheating

A notable issue of the 700R4 transmission is overheating. Usually, the vehicles that use this transmission produce high power output and are put to extreme use, which could lead to overheating. The overheating of the ATF could cause damage to the internal components of the car. On the other hand, this problem can easily be avoided by installing an auxiliary transmission cooler.

2. Broken Input Shaft

The 700R4 upon its launch featured a 27 spline input shaft (also found on the THM200C and 2004R transmissions). This input shaft was unable to handle much torque; hence, it was not a surprise when it broke down. Nonetheless, 30 spline shafts were used in Chevrolet small-block V8s 1984, and this helped to give this sturdy gearbox more reliability.

3. Stuck Governor

Dirty transmission fluid in the 700R4 governor can cause the springs located in the governor to be inoperable. If this happens, the vehicle could experience delayed shifts. However, regular servicing of the 700R4 can keep this problem at bay.

 

700R4 vs. 4L60

GM renamed the 700R4 to 4L60 (4-speed Longitudinal 6,000 lb GVWR) in 1990, even though it was the same transmission without any significant changes. However, there was an enhancement to the 4L60 in 1993 where it was electronically controlled instead of hydraulically with a TV cable.

Here, electronic controls replaced its hydraulic shifting system, and the transmission was called the 4L60E. It is also worth noting that the 4L60E cannot be easily swapped for the 4L60 since the 4L60E shifts using a powertrain control module (PCM).

 

700R4 Transmission Updates

Specific updates were made to the 700R4 transmission after its launch. Some of these were:

1. Spline Shaft

Instead of 27 spline input shaft, the 700R4 latter featured 30 spline input shaft as found in the TH400 transmissions. This upgrade was made in 1984, and it combated the common failure point of the transmission.

2. Internal Components

Also, internal components such as the oil pump housing and ring gear were updated in the 700R4 between 1984-1987, and this ended with an auxiliary valve body for 700s in 1986.

3. Electronic Controls

The 700R4, after being renamed to the 4L60, featured electronic controls that replaced its hydraulic shifting system. This electronic control came with Vehicle Speed Sensor that alerted the engine’s computer of the speed at which the car is moving and when it was time to switch gears. These shifts in gears were then made possible by transmitting a signal to a shift solenoid.

 

The Bottom Line

The 700R4 is one of the best automatic transmissions that was launched by General Motors. It was renamed to the 4L60, and the latter also became a popular transmission name. Today, more enhanced transmissions have been launched, and they can still find their roots to the 700R4.

The 700R4’s need to offer fuel economy and enhanced performance were its major selling points, and its ability to be electronically controlled as is the case of the 4l60E made it a force to reckon with. Nonetheless, there are still transmission problems you need to be wary of to ensure your transmission stands the test of time.

Importance of Fuel Stabilizer When Storing Your Vehicle Long-Term

Importance of Fuel Stabilizer When Storing Your Vehicle Long-Term - Gearstar Performance Transmissions

The importance of adding a fuel stabilizer when storing your vehicle for a long term cannot be over-emphasized. If you’ve just refilled your tank or still have a significant amount of gas in it, and you’ve made plans not to drive your car for weeks or months, then a fuel stabilizer needs to be added to the tank to preserve the fuel’s quality.

Fuel stabilizers ensure that your gas does not go stale so that the fuel stays fresh until the vehicle is started again. Take a look at why gas goes bad in the first place, and the importance of using a quality fuel stabilizer for small and large engines.

What Causes Fuel to Go Bad?

Driving a car often means it will be refilled regularly with fuel, and as such, the fuel system will always use fresh gas. On the other hand, leaving the car for months can cause the fuel to go bad. More so, it takes a while for fuel in a tank to go stale, and this can be attributed to the following:

Oxidation

A car’s fuel system is not airtight. The fuel is exposed to moisture and oxygen while it sits for weeks unending. This causes an oxidation process to occur as well as evaporation of the fuel’s constituents, which could make the fuel to gum in the insides of the carburetor or fuel injection system.

If the fuel goes bad, it loses its potency and can also pose serious problems to the fuel system by breaking it down gradually. The only way to start the engine would be to clean the carburetor before the car is refueled. However, this issue won’t be the case with the addition of a quality fuel stabilizer that preserves the quality of fuel in your car, irrespective of how long the ride will sit without being driven.

Ethanol

There are Ethanol infused fuels that can have an effect on the delicate parts of the car’s carburetors or fuel injection parts. If that’s the case with your vehicle, storing your car in the winter and trying to start it in the spring could pose a problem. The latter could lead to spending more money than necessary on car repairs due to the damage to these components.

What Is Fuel Stabilizer?

A fuel stabilizer is a liquid agent added to fuel, creating a protective layer and preventing the fuel from deteriorating or going bad after a while. Fuel stabilizers also prevent fuel from gumming to the insides of the fuel system, even after the vehicle’s long-term storage.

As a result, you can store your car for the long term (24 months) and the fuel will still be as fresh as when it was bought at the gas station. Alternatively, the deterioration of fuel due to oxidation and the absence of a fuel stabilizer would require that the car’s carburetor be cleaned before it is refueled.

It is worth noting that fuel stabilizers are meant for seasonal types of equipment, classic cars, or boats, and not everyday usage.

Importance of Fuel Stabilizer

Some benefits of adding a fuel stabilizer to the tank include:

1. Helps to Store the Car Long-Term

You can store your car for winter without worrying that the fuel may go bad or break down vital components of the car. Instead of stale fuel in your car, it will be as fresh as it was the day you filled up. It all begins with having the best fuel stabilizer in your tank.

2. Saves Repair Costs

Bad fuel in the car can damage the car’s carburetor or fuel injection system. It could also lead to the engine’s corrosion. A stabilizer helps the fuel maintain its full strength while preventing chemical break down too.

Similarly, the fuel will not stick to important components, which could lead to the car’s failure. This and many more saves you the cost of repairs that would’ve been triggered if these parts were damaged.

3. Saves Refueling Costs

Gas does not come cheap, especially if you had just filled it fully some weeks ago. Hence, you can still make use of it since it has not degraded, without spending to have a new refill.

4. Takes Away the Need to Drain the Tank

A possible solution to preserving the internal parts of the carburetor while the fuel is inside the car would’ve been to drain and dry the whole fuel system. However, you won’t have to do this with a good fuel stabilizer.

How to Use a Fuel Stabilizer

To use a fuel stabilizer in a car that you won’t be driving for the next few weeks or months simply pour it in the fuel tank. First, fill the car with 95 percent of fresh fuel, and then add the recommended amount of fuel stabilizer.

Next, start your car and let it run for at least five minutes, ensuring that the fuel and fuel stabilizer mixes thoroughly. A good practice to ensure that the stabilized fuel reaches all parts of the fuel system is to add it to the tank one or two days before you store the vehicle.

The Bottom Line

The importance of fuel stabilizers range from their ability to keep fuel fresh, to prevent a breakdown of your vehicle, and to ensure that you can drive your car after it has been sitting idle. Now that you’re aware of the benefits of using fuel stabilizers, be sure to purchase a quality stabilizer for the next time your vehicle sits parked. You will save yourself the cost of replacing the fuel, cleaning the carburetor, or even changing a mechanical component.

Hottest New Products for Muscle Car Enthusiasts

Hottest New Products for Muscle Car Enthusiasts - Gearstar Performance Transmissions

The hottest new products for muscle car enthusiasts have been designed to amplify every aspect of the car. You can rely on the expertise of numerous car manufacturers and designers to deliver a product that improves the level of performance or aesthetic appeal of your ride. What’s more, they can also serve as unique gifts for car lovers who are always on the lookout for what’s in trend.

New Products for Muscle Car Enthusiasts

Some of the latest products for muscle car enthusiasts are:

1. LS Side Pipe Headers

The new LS side pipe headers from Detroit Speed, Inc. are designed for LS engines, specifically in the 1968-1982 Corvette. Muscle car enthusiasts will love these headers due to their maximum ground clearance, cleaner engine compartment appearance, and high performance.

According to the product’s developer, the headers are durable, attractive, and their installation is quite easy. The LS side pipe headers can be paired with C3 Corvettes, and they were designed to specifically fit Detroit Speed’s SpeedRay front suspension installations. Specifications include:

    • Stainless steel design
    • Hand welded by Pro Fabrication
    • 1 7/8-inch primary tube diameter
    • 4-way merge collectors

Complete your Corvette’s exhaust by pairing the LS side pipe headers with Hooker stainless steel side tubes.

2. T-56 All-in-One Harness

The T-56 transmission all-in-one harness is useful to car enthusiasts owning vehicles equipped with a Tremec T-56 Magnum transmission, a six-speed manual transmission used in cars produced by Ford Motor Company, General Motors, and Dodge. The Tremec T-56 Magnum transmission has 3 electronic connections that are used to control the car’s reverse lockout, reverse lights, and speedometer output.

However, there is no convenient way to connect the reverse lockout. Manipulations carried out by car enthusiasts to create this connection often leads to premature wear on the reverse lockout solenoid. This problem can be avoided with the all-in-one harness, which serves as a beneficial complement to Classic Instruments’ electronic speedometer in the T-56 transmission. This easy to install harness offers proper OE functionality for the reverse lockout, a reverse light connection, and a VSS signal.

3. Emblematic

The 1968 Chevy II and the 1968 -1972 Nova also have something new to work with, and that’s all new trunk lid emblems released by Classic Industries. These trunk emblems are officially licensed GM Restoration parts; meaning they are of high quality and can be used to give your car’s rear a fresh look. The emblems are made of high quality die-cast materials, featuring black satin accents and factory markings that showcase their authentic appearance.

4. Vintage-Style Valve Covers

1958-86 Small Block Chevy engines manufactured with perimeter bolt patterns can have a revamped look with the new vintage Series valve covers released by Holley. These valve covers are 3.3″ tall with pre-installed internal oil baffles, and are made from die-cast aluminum.

Holley’s covers reduce the risk of oil leaks and warping of the valve cover flange while adding detail to the motor’s looks. These valve covers are available in different finishes including:

    • Gloss red
    • Natural cast
    • Polished
    • Satin black with machined fins
    • Factory orange with machined fins

Stock valve covers have unappealing style and offer minimal performance. Holley’s covers are an improvement on factory offerings and are equipped with coil-on-cover ignition technology, improving your Chevy’s performance.

5. Strong S-Series

The Strong S-Series by Strange Engineering is made from a high tensile strength nodular iron that is designed for hard-core street and track applications. The nodular iron case was crafted to offer increased strength, attested by its reinforced tail bearing, nodular iron caps, and radial rib design.

The product can be used in conjunction with Posi units, helical differentials, and also a spool given its level of reinforcement that offers enhanced rigidity. On the same note, the nodular iron case offers a Daytona pinion support and a wide selection of a street gear.

6. Book on COPO History

COPO muscle cars, including the Nova, Camaro, Chevelle, Vega, and Corvair are decades old (the 1960s and early 1970s), however, these are legendary performance vehicles manufactured by GM. COPO stands for “Central Office Production Order,” and the concept was created as a loophole for car manufactures to produce and sell high performance vehicles to the general public.

Many popular GM muscle cars have originated from these American, industry shaping vehicles. Given the immense popularity of these beasts, a book titled “COPO Camaro, Chevelle & Nova” has been written specifically to provide details on COPO muscle cars.

The book includes narratives from GM executives, original owners of these cars, repair technicians, among others. If you’re a die-hard fan of COPO muscle cars like the Camaro, Chevelle, or Nova, or you’re interested to learn about where it all began, then this book is for you.

7. Drop-Down Battery Boxes

Batteries can now be placed in drop-down battery boxes that help to distribute the car’s weight evenly. Another advantage of installing one of these boxes is that the engine compartment is less cluttered and now provides the opportunity for an auxiliary or main battery to be added.

If there is insufficient space in your trunk to support a battery, or you’d rather not have one sitting in it, use a drop-down box to mount your battery under the floor of your vehicle. These boxes provide easier to access the battery, making installations or replacements simple.

Drop-down battery boxes are commonly produced with black powder-coated steel designs, but stainless steel options are available. Most standard-sized battery sizes will fit into the specified internal dimensions of 10.5 by 7 by 9.5 inches (LxWxH).

8. Painless Pro Series Chassis Harnesses

The Painless Pro-Series chassis harness provides you with tools necessary for turning your custom routed wiring into a direct fit for your build. Each Pro-Series harness comes equipped with ample length wiring, giving you the flexibility of routing and hiding wires specific to your needs.

Painless Performance Products offers the chassis harnesses in two size, the smaller 12 fuse block controlling 23 circuits or, the larger 18 fuse block controlling 25 circuits. Each kit includes heat shrink, insulated and non-insulated butt splices, cable ties and cable tie clips.

The Bottom Line

These are some of the newest products for muscle car enthusiasts looking to improve their car’s performance and appearance. These products can make your ride unique and stand out from every other muscle car out there. Hence, you need to be among one of the first to take advantage of these products to ensure that your car is revamped from the traditional muscle car.

Overview of the 4L85E Transmission

Overview of the 4L85E Transmission - Gearstar Performance

The 4L85E transmission is a series of an automatic transmission from General Motors. It is also popular since it is a heavy-duty transmission that was improved upon to make it handle more torque and impact driving.

What’s more, it may be over a decade since it was launched, but its solid build makes it a contender with older transmissions. Thus, it should not come as a surprise that car enthusiasts are continually looking for ways to upgrade their transmission to be even better.

Here’s an overview of the 4L85E transmission that informs you of its specification, differences from other series, problems, and improvements.

 

THE 4L85E TRANSMISSION

The 4L85E is a 4-speed automatic transmission that was launched by General Motors in 2002. Like the 4L80E transmission, it was an upgrade to the TH400 three-speed transmission from GM.

Hence, it can be considered as a TH400 with overdrive, a lockup torque converter, as well as advanced electronic controls. However, the 4L85E can handle more torque (460 lb-ft of torque) than the 4L80E transmission.

It has been rated to handle vehicles with a GVWR of up to 18,000 lbs and 690 ft·lbf (935 N·m) of torque. As a result of its exceptional strength, this transmission is suitable for drag racing, off-road racing, and even custom street driving.

Some cars that used the 4L85E transmission include heavy-duty GM trucks and vans, and also a classic Chevy with a big-block. Specifically, these cars were:

    • Rally Fighter
    • GMC Yukon XL
    • Chevy Suburban
    • Chevrolet Avalanche
    • GMC Savana with Duramax Diesel
    • Chevrolet Express with Duramax Diesel

For this reason, the 4L85E can be used for large vehicles that are meant for off-roading or heavy-duty transporting.

 

4L80E vs. 4L85E

There are several differences between the 4L80E and 4L85E transmission, even though these were upgrades to the TH400. The popularity and strength of the TH400 may have rubbed off on the 4L85E, but it still brought something unique to the table.

Some of these differences include:

    • The 4L85E transmission is rated up to 460 lb-ft, but the 4L80E is rated up to 440 lb-ft.
    • The 4L85E transmission featured a five-pinion reaction gearset and a five-pinion output gearset.

Some parts that were improved in the 4L85E were:

    • Input and reaction carriers.
    • Improved overdrive planet and drum.

 

4L85E vs. TH400

Like the 4L80E, there are also differences between the 4L85E and the TH400 transmission. Notable among these is its physical appearance.

Here’s what it looks like:

    • The 4L85E is 26.25 inches longer than the TH400.
    • The 4L85E is also bigger than the TH400, which is evident in the length and size of the pan.
    • Despite its large size, the 4L85E is also easy to fit into a car, and even easier than the 4L60E series of transmissions.

 

4L85E TRANSMISSION PROBLEMS

Despite the huge improvements in the 4L85E transmission, there are still specific problems that have been reported by users of this transmission. Notable among this is the case of slipping or not syncing on time when the transmission is placed in drive.

The problem is also evident when trying to move from 1st to 2nd gear or 2nd to 3rd gear, since more time may be taken to respond – It’s the case when it takes twice the time to shift to gear. On the other hand, slipping can lead to overheating, which can cause the transmission to burn.

The damage can be so severe that it would be difficult to rebuild the transmission. Alternatively, the 4L85E can notify you of a slip when there is an increase in the variable pump pressure. As the transmission wears, this pump pressure is increased, and as such, slipping may not occur until the transmission fails.

Over and above that, there’s a reported case of the wire harness for the trans cracking, and thereby allowing transmission fluid to enter the connector end. The latter results in a short, which is noticeable when doing hills/grades.

 

4L85E IMPROVEMENTS

The 4L85E transmission may offer considerable strength, but some improvements can be made to it in order to increase its performance: For starters, the transmission cooler using its own electric fan can be installed in the transmission in a bid to promote good airflow.

Similarly, a shift improver kit can be used to improve the 4L85E transmission. What this kit does is to:

    • Give the driver more control of their vehicle.
    • Decrease the transmission of internal line pressure.
    • Decrease the time required for the clutch and bands to engage. And in return, heat and wear are reduced during off-roading.

These aside, GM has made an improvement to the 4L85E and now, there is the SuperMatic 4L85E transmission as is evident in the Chevrolet cars.

 

THE SUPERMATIC 4L85E TRANSMISSION

The SuperMatic 4L85E transmission is an improved version of the 4L85E and as such, it is also a heavy-duty transmission. This variant, however, has unique differences that set it aside from the 4L85E.

For instance, it features an additional heavy-duty clutch plate and has revised valve body calibration as well as increased fluid pressure. The gear ratios of this transmission are 2.48, 1.48, 1.00, and .075 for the 1st, 2nd, 3rd, and 4th gears respectively.

In comparison to the 4L85E, its gear ratios are 2.48, 1.48, 1.00, 0.75, and 2.07, from First through Reverse. On the other hand, the SuperMatic 4L85E transmission is suitable for Gen I small blocks and all big blocks.

 

THE BOTTOM LINE

An overview of the 4L85E transmission shows that it is also one of the most reliable GM overdrive transmissions. It can handle more torque than what is rated on paper, which makes it suitable for off-roading, and generally, vehicles that will need to handle a lot of impacts.

What’s more, it boasts of the same power as the TH400 and 4L85E and takes it one step further to be a good variant among the trio. The features of the 4L85E transmission can best be appreciated by comparing it with a range of series transmission that was launched before it.

We’ve covered this and many more in our overview; hence you can make the decision on which to settle for among a range of options.