G-Body Auto Trans Control Units

If you're ready to swap an LS engine into you '73-'87 Squarebody Chevy or GMC truck, here's a guide to get you started and a parts list to help you get everything you need for your swap.

Learn about the power behind the G-body platform and the steps to upgrade a 7.5" bolt rear end to a 8.5" to withstand high horsepower. See how to change the differential fluid and install new gaskets.

Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility.

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

Learn how to replace a fuel sending unit. Our fuel gauge sending unit guide and installation video covers all you need to match your fuel sender and gauge.

Here's a handy guide to familiarize you with our G-Comp line of performance suspension systems.

Need a little help Identifying GM Body Styles 1964-1972? Click Here!

Check out these tips on T-5 transmissions!

Learn how replace lower and upper rear control arms. Read up on racer Steve's A-body control arm replacement and the bushings included kit he recommends.

Have a 1970-1994 GM A- or X-body in need of some new lower control arms? Take a look at what Speedway Motors' employee Steve L. has to say about our lower control arms!