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.

Shifting Into Overdrive With Performance Automatic

Gearstar Performance October 15th, 2019 6 minute read

Many transmissions in the past may have been designed without an overdrive, but this is not the case with modern transmissions. The reason is because of...

Overview of the 4L80E Transmission

Gearstar Performance October 7th, 2019 6 minute read

The 4L80E transmission was produced in October 1963 by General motors for longitudinal engine configurations. This transmission is a revamped version of...

The 4L80E Built With the Latest and Greatest Parts

Gearstar Performance September 17th, 2019 6 minute read

The 4L80E may be an old transmission from General Motors, but it has been revamped with the latest and greatest modern parts to boost its performance. As...

Was Your Transmission Rebuild Dyno Tested?

Gearstar Performance September 11th, 2019 6 minute read

Whether your transmission rebuild is working perfectly today, or it is already giving you problems, great thought has to be given to its dyno-testing because...

6 Tips on Buying Performance Transmissions Online

Gearstar Performance September 4th, 2019 8 minute read

You may be torn between the decision of whether it is worth replacing or rebuilding a transmission. It may also become an important decision to make,...

Blown Transmission? Guess Again, It Could Be Your Converter

Gearstar Performance August 27th, 2019 6 minute read

Modern cars have become more complicated from what they were before due to the launch of new technologies. These technologies have led to features such as...

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