TH400 Racing Automatic Transmission Parts

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

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

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

The LS swap is no doubt still going strong, but if you’re planning to run an automatic behind your 4.8, 5.3, or 6.0L LS-powered ride, you’ll need to pay attention to a few items we discuss in this buyer’s guide.

The 700R4 is a great choice when it's time to upgrade your classic car or truck with an overdrive transmission. Here's what you need to know about GM's famous 4-speed automatic.

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

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

How to plan and execute a LS swap into any 1973-1987 Chevy/GMC K10 pickup truck.

Exlpoded View of the Bert 1300 Late Model Racing Transmission

Learn how Zach replaces a transmission and breakaway converter in his 55 Chevy, with some helpful tips along the way.