Gearstar Performance Transmission Blog

Manual vs. Automatic Transmissions: Auto Industry's Greatest Rivalry | Gearstar Performance

Manual vs. Automatic Transmissions: Auto Industry's Greatest Rivalry

Feb 12, 2018 First brought to market by GM and popularized by the Hydra-Matic and its successors, automatic transmissions differed from their manual counterparts through the addition of a self-sufficient hydraulic fluid-based automatic shifting system, allowing cars to shift gears without driver input, versus the classic manual or stick shift system. Ever since automatic transmissions hit the market, the same debate has been raging on for decades.
Upgrading a 4L70E Transmission | Gearstar Performance

Upgrading a 4L70E Transmission

Jan 26, 2018 Depending on what you want, the GM 4L70E transmission might be an excellent choice. It's all a question of specialization. Picking your way through GM's family of 4-speed electronic automatic transmissions can be summarized to: how heavy is your car, and how much horsepower are you looking to work with. Heavier builds steer towards the larger, more imposing, power-hungry 4L80E, and the smaller your car is, the more you should be skewing towards the 4L60E.
Overview of GM's Stronger 4L65E Transmission | Gearstar Performance

Overview of GM's Stronger 4L65E Transmission

Jan 11, 2018 With some elbow grease, the right aftermarket parts and a good deal of experience with GM transmissions, a dedicated and qualified specialist can turn the 4L65E into a workhorse of a transmission, with a total 650 horsepower and matching 650 ft.-lbs. of torque. The 4L65E is ideal for such a high amount of torque, as its five-pinion design, 3-4 clutch and improved hydraulic fluid capacity make it a clear winner over the 4L60E for heavier builds with more required power.
200-4R Transmission: The Holy Grail of Power, Fuel Efficiency | Gearstar Performance

200-4R Transmission: The Holy Grail of Power, Fuel Efficiency

Jan 9, 2018 If you're looking for a way to upgrade your classic muscle car's Powerglide or TH350, then you would be hard-pressed to find a better answer than the 700R4, or the 200-4R. Yet while the 700R4 is often seen as the more popular successor to the throne of the TH350, the 700R4 is not going to squeeze into every build, not is it necessarily the best fit for your car - especially if you are going forward with a lot of aftermarket work in mind.
Building a 4L60E With Performance-Friendly Gear Ratios | Gearstar

Building a 4L60E With Performance-Friendly Gear Ratios

Dec 31, 2017 When it comes to matching cost with performance on a Chevy, you can't go wrong with an older, customized transmission. While there's nothing wrong with refurbishing a classic muscle car with a new and improved Turbo 350, you're more likely going to see cars from the 90s and beyond outfitted with the more modern set of 4L60s and 4L60Es - four-speed automatic transmissions that are basically descendants of the Turbo-Hydramatic 700R4, a powerhouse of a transmission.
Let's Talk High-Performance 4R70W Transmissions | Gearstar

Let's Talk High-Performance 4R70W Transmissions

Dec 28, 2017 No stock transmission is perfect, but if want a small-body transmission with potential for insane performance without needing to mess with pesky throttle valve cables or old-school controls, then the Ford 4R70W transmission is a good place to start - but by no means the best place to end. Here's an overview of the 4R70W, its comparison to other popular Ford transmissions, its basic strengths, glaring weaknesses, and ways to improve on it for better reliability and performance.