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.
200-4R Performance Transmission Install
By: John ShapiroWhat keeps people from enjoying their car on long distance drives? The gas mileage generated from that old tired 3 speed auto trans.We...
Installing Gearstar Performance Level 4 4L65E Transmission
Gearstar transmissions offer top notch quality whether in a muscle car, pro-touring beast, restoration project, daily-driver or modern performance machine....
Why a Gearstar 4L80E
Why a Gearstar 4L80E? A 4L80E is a four-speed overdrive transmission that is the evolutionary counterpart to the TH400 three-speed transmission.
Gearstar 200-4R Overdrive Transmission
We needed a transmission that could do it all, and support any future engine upgrades without worrying about reliability. Plus, the Nova had to be able...
Upgrading GM 4L70E Transmissions Via Gearstar
Gearstar performance transmissions are all custom. Building each transmission with to the specific needs of the customer is important to Gearstar. We're...
Gearstar 4L60E Level Two Transmission - Installation
Gearstar transmissions are all custom. Building each transmission with to the specific needs of the customer is important to Gearstar. We're looking to...