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.

Gear Up….to a Gearstar Overdrive Transmission

Ryan Steele 3 minute read

By: John Shapiro What keeps people from enjoying their car on long distance drives? It’s no doubt the gas mileage generated from that old tired 3 speed...

Picking an Overdrive Automatic......And The Gearing To Go With It

Ryan Steele 13 minute read

Over the years, the trucks have certainly become more sophisticated. Take transmissions for example. At one time the only choices were “three-on-the-tree”...

How It Works

Ryan Steele 12 minute read

Just like a quick stroll through the cruise night parking lot will confirm the dominance of GM overdrive automatics on the street, walking down the...

Automagic Transmissions- Computer Controls for Electronic Overdrives

Ryan Steele 6 minute read

How Gearstar Builds Performance Transmissions

Ryan Steele 9 minute read

An order comes in, it gets a tag number, and then it becomes one person's responsibility until it is crated. Not a station on a line. One builder, from...

Ultimate Summer Camp Jeep Buildup, Part 3

Ryan Steele 7 minute read

The Ultimate Summer Camp Jeep came together quicker than you might imagine, as can be seen in the current coverage of our annual weeklong...