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.
Ford 4R70W and 4R75W Installation Instructions
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
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
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...
6L80E and 6L90E Transmission Specs and Identification
The 6L80E and the 6L90E are close enough that people mix them up constantly, and different enough that putting the wrong one in a heavy truck is an...
Sports Cars That Are Faster with an Automatic Performance Transmission
Some luxury cars with automatic transmission include the Lexus ISF, BMW M4/M5, Audi S6/S8, and Porsche Panamera, to mention a few. Since there are two...
6 Long-Term Benefits of a Rebuilt Transmission
Is your vehicle transmission giving you a headache, and you're already contemplating replacing it with a brand-new one? Replacing a faulty vehicle...