Gearstar Performance

Custom Transmission Build Team




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.

6 Ways to Prolong the Life of Your Performance Transmission

6 Ways to Prolong the Life of Your Performance Transmission

Gearstar Performance 6 minute read

There are several ways to prolong the life of your performance transmission, and if you employ them, it’ll save you from making huge expenses in the long...

4R70W Transmission-Swapped Fourth-Gen Mustang?

4R70W Transmission-Swapped Fourth-Gen Mustang?

Gearstar Performance 5 minute read

The fourth generation Ford Mustang can be made faster and more reliable by carrying out some performance upgrades instead of adding more power. It may...

Overview of the GM TH400 Transmission

Overview of the GM TH400 Transmission

Gearstar Performance 6 minute read

 The TH400 or Turbo 400 is a good transmission that was used in several cars years ago. This popular transmission was found in GM’s cars, as well as,...

The Logic Behind a 10-Speed Transmission

The Logic Behind a 10-Speed Transmission

Gearstar Performance 6 minute read

There are six, seven, and eight speeds transmissions, which may already seem like a lot to meet any car's enthusiast need for speed and great performance....

Why More Turbo Boost Doesn't Always Mean More Power

Why More Turbo Boost Doesn't Always Mean More Power

Gearstar Performance 6 minute read

Did you know that more turbo boost does not always translate into more power? If you didn't, we're going to give you some reasons why that is and what...

Why Restomods Are Truly the Best of Both Worlds

Why Restomods Are Truly the Best of Both Worlds

Gearstar Performance 6 minute read

The new trend of restomods is definitely the best of both worlds. Whether you're a classic or a modern car lover, you can have it all in a...