Built to Hold

Build guides, transmission tech, and install notes from the Gearstar shop floor. Every unit we ship is assembled by one builder, matched to your combo, and dyno-tested before it goes out the door. This is where we show the work: what holds, what grenades, and how to spec it right the first time.

Overview of the Performance 700R4 Transmission

Overview of the Performance 700R4 Transmission

Gearstar Performance 6 minute read

Having a piece of basic knowledge on how to service your 700R4 transmission is not a bad idea, so coming down here to read the step-by-step approach on how...

How to Modify Your Ford AOD Transmission to Perfection

How to Modify Your Ford AOD Transmission to Perfection

Gearstar Performance 5 minute read

Ford’s Automatic Overdrive (AOD) was firstly used in 1980 before it became an overly electronic controlled transmission AOD-E in 1991. There are simple, yet...

3 Types of Ford AOD Transmission Identification

3 Types of Ford AOD Transmission Identification

Gearstar Performance 6 minute read

The oil crisis of 1973 was a jarring reality for many American motorists as fuel became more expensive than it used to be. The only way out of this...

The Benefits of a High Performance Transmission

The Benefits of a High Performance Transmission

Gearstar Performance 6 minute read

Do you want to upgrade to a high-performance transmission? Most car owners know that the primary role of a vehicle's transmission is to apply power from...

What is an Aftermarket Torque Converter?

What is an Aftermarket Torque Converter?

Gearstar Performance 6 minute read

What is an aftermarket torque converter? The torque converter is a vital component of many auto transmission vehicles. It plays a crucial role in starting...

GM Turbo 350 Transmission Options

GM Turbo 350 Transmission Options

Gearstar Performance 5 minute read

The GM Turbo 350 transmission is a 3-speed, automatic shift transmission and one of the greatest automatic transmissions ever built. It was introduced in...