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.

Transmission Control Module: Buyer's Guide for Classic Cars

Transmission Control Module: Buyer's Guide for Classic Cars

Gearstar Performance 4 minute read

An advanced, late-model electronic transmission and transmission control module can enhance the performance of classic cars. These controllers offer...

How Transmission Control Module Reset Works

Gearstar Performance 5 minute read

If you own a vehicle powered by an automatic transmission, it would certainly have a transmission control module or TCM. This is a vital component the...

'Tis the Season for Vehicle Winterization

'Tis the Season for Vehicle Winterization

Gearstar Performance 6 minute read

Winter is here, and this is not about the popular Game of Thrones series but about your vehicle. Your vehicle needs proper maintenance during the colder...

Performance Evolution of Ford Automatic Transmissions

Performance Evolution of Ford Automatic Transmissions

Gearstar Performance 6 minute read

The era between 1964 and the 1980s was remarkable in the automobile industry. During this period, millions of Ford vehicles – i.e., cars and trucks –...

Here's How the Chevy 4L60E Transmission Shifted V8 Engines for Decades

Here's How the Chevy 4L60E Transmission Shifted V8 Engines for Decades

Gearstar Performance 6 minute read

The 4L60E refers to a series of General Motors transmissions manufactured and introduced for sports utility vehicles, cars, and trucks. It significantly...

Clogged Transmission Filter Warning Signs (and How to Fix It)

Clogged Transmission Filter Warning Signs (and How to Fix It)

Gearstar Performance 5 minute read

Transmissions are composed of several components designed to ensure the gear system functions seamlessly. One such component is the filter or strainer. The primary...

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