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.

GM 700-R4 and 200-4R Transmission Installation Instructions

6 minute read

PLEASE FEEL FREE TO CALL US ON OUR TECH LINE AT (330) 434-2757 BETWEEN 8:00 AM AND 5:00 PM EST IF YOU HAVE ANY QUESTIONS.Failure to read and follow these...

Ford AOD Transmission Installation Instructions

Ryan Steele 5 minute read

PLEASE FEEL FREE TO CALL US ON OUR TECH LINE AT (330) 434-2757 BETWEEN 8:00 AM AND 5:00 PM EST IF YOU HAVE ANY QUESTIONS. Please read instructions...

Mopar NAG1 Transmission Installation Instructions

Mopar NAG1 Transmission Installation Instructions

Ryan Steele 6 minute read

PLEASE FEEL FREE TO CALL US ON OUR TECH LINE AT (330) 434-2757 BETWEEN 8:00 AM AND 5:00 PM EST IF YOU HAVE ANY QUESTIONS. Please read instructions...

Ford 4R70W and 4R75W Installation Instructions

Ryan Steele 4 minute read

PLEASE FEEL FREE TO CALL US ON OUR TECH LINE AT (330) 434-2757 BETWEEN 8:00 AM AND 5:00 PM EST IF YOU HAVE ANY QUESTIONS. Please read instructions...

The ABCs of a 4 Speed Automatic Transmission

The ABCs of a 4 Speed Automatic Transmission

Ryan Steele 10 minute read

A transmission exists because an engine only makes useful power inside a narrow RPM band, and a car needs to move from a stop to highway speed. The...

E40D Transmission Swap – Hot Rod Hauler

Ryan Steele 1 minute read

Check out this E40D transmission swap on this 1973 Ford f350. Read more only at www.customclassictrucks.com, the official website for Custom Classic Trucks...