700R4, Chrysler 9-1/4 Inch, Racing Parts

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.

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

In this Tech Tip, John responds to a customer looking to upgrade the 8” stock differential in his Cougar to a 9” open diff.

In this video, we go through the process of measuring and cutting 9" Ford axles.

Get a good foundation on racing shocks and their different functions. Learn about the fundamentals and the pros and cons between various types of shocks available.

Learn how to corner balance a car for optimal weight distribution and performance.

The Speedway Motors Tech Team created a quick how-to on squaring the front axle of your open wheel race car.