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.

Manual vs. Automatic Transmissions for Off-Road Activity

Gearstar Performance July 5th, 2019 6 minute read

Your choice between manual vs automatic transmissions for off-road activity is dependent on a number of factors. Each has its advantages and...

Getting Back to the Basics of Torque Converters

Gearstar Performance June 25th, 2019 7 minute read

Cars have come a long way from not only offering high horsepower, low emissions, but driveability which was once a bone of contention. These days, fuel...

The Bulletproof Ford AOD Transmission

Gearstar Performance June 20th, 2019 7 minute read

There is the Ford AOD (automatic overdrive) transmission on one hand, and the Turbo 400 (TH400), on the other. However, car enthusiasts may be quick to...

Essential Tips When Choosing a Performance Transmission Technician/Shop

Gearstar Performance June 5th, 2019 6 minute read

Have you ever found yourself wondering how to find the best performance transmission technician or shop out there? We know we have at some point. Like us,...

4L60E Transmission Mods That You Can Count On

Gearstar Performance May 31st, 2019 8 minute read

It is every car lover's dream for their vehicle to be fast, optimally use fuel, and offer an acceptable level of performance. One way each of these can...

Transmission Upgrades That Meet Your Need for Speed

Gearstar Performance May 28th, 2019 8 minute read

Are you a racer or you're out to get one of the speedy cars with a strong rear-wheel horsepower? Then you can achieve your need for speed by packing a...

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