Gearstar Performance

Custom Transmission Build Team

  • torque converter matching
  • dyno testing
  • transmission installs
  • GM performance automatics
  • Ford performance automatics
  • Mopar performance automatics




Gearstar Performance Transmissions has been hand-building high-performance automatics in Akron, Ohio since 1996. Every unit is assembled start to finish by one builder, matched to the customer's engine, gearing and intended use, then dyno-tested before it ships. The build team writes here about transmission specs, install procedures, torque converter matching and what actually holds up behind real power.

Yes, A Transmission Fluid Change is Needed (And Here's Why)

Yes, A Transmission Fluid Change is Needed (And Here's Why)

Gearstar Performance 6 minute read

If you notice your transmission slipping or have difficulty shifting gears, it may be time for a transmission fluid change. Over time, the fluid can...

8 Basic Automatic Transmission Maintenance Tips

8 Basic Automatic Transmission Maintenance Tips

Gearstar Performance 6 minute read

Transmission maintenance is important because it can help prevent future car problems, extend the life of your transmission, and improve your vehicle's overall...

10 Signs of a Bad Transmission (And what to do)

10 Signs of a Bad Transmission (And what to do)

Gearstar Performance 6 minute read

One of the most disheartening things any car owner can hear is that you need a brand-new transmission. This is why detecting the signs of a bad...

4L60E Transmission Swap Tips and Tricks

4L60E Transmission Swap Tips and Tricks

Gearstar Performance 5 minute read

If you have questions about a 4L60E transmission swap and wondering what's the best way to do so without any hitch, then this is your ultimate guide.The...

Overachieving Overdrive With a 700R4 Transmission Rebuild

Overachieving Overdrive With a 700R4 Transmission Rebuild

Gearstar Performance 5 minute read

A good 700R4 transmission rebuild will leave you with a ride that is more powerful, durable, and with firmer shifts.In terms of power, you can get over...

5 Vehicles with Ford 4R70w Transmissions

5 Vehicles with Ford 4R70w Transmissions

Gearstar Performance 6 minute read

Today, you are going to learn more about the magnificent Ford 4R70W transmissions, why they may be the ideal fit for your car, and also get to know the top...

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