TH400, Torque Converters

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

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.

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.

Learn how to select a torque converter. Read up on expert torque converter recommendations and learn how to choose the right stall speed for your torque converter and application.

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.

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

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

We show you how to keep that old GM transmission when swapping in an LS engine. Our LS swap adapter kits make it easy!

Maintain your torque tubes with this quick tip for Speedway Motors.