AC TH400 Muscle & Classic Car Transmission Parts

This resource contains a transmission pan shape ID chart and other tips to help with identifying GM transmissions.

Concerned about a transmission swap? Our engine transmission compatibility checker will help confirm what you need to make it happen.

Learn how to install a side detent shifter in a 1969 Chevy C10.

Learn how to install an external Transmission Cooler, to help keep the temperature of your transmission consistent.

LS swaps are nothing new, but they're still a little mysterious to some of us. Here is an overview of what you will need and what you need to know to swap some modern performance into your muscle car, truck, or hot rod!

Prepare your classic muscle car for autocross competition by exploring the best options, beginner tips, and essential suspension upgrades.

Who gets your pick as the best manufacturer from the golden age of the muscle car wars?

I'm sorry to have to tell you this, but the '64 GTO was not the first muscle car.

Check out these tips on T-5 transmissions!

Learn about how aftermarket transmission coolers can help keep your transmission cool and the different options available for cooling with our expert guide.