GM H-Body Valve Locks

Learn what a manual valve body can and cannot do for your automatic transmission and performance driving needs

How proportioning valves work, fixed vs adjustable valves explained, and how to reset a prop valve.

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

In this Tech Tip, John makes a few suggestions on how to deal with the classic problem of a Flathead Ford, vapor-lock.

Jess M. talks a bit about the locking lug nut set from Gorilla Automotive Products that she installed on her 1933 Ford coupe to help keep her new Rocket Racing Wheels safe.

A properly bled brake system ensures optimal braking; here’s how to do it right the first time all by yourself

Learn how to check and set your engine's valve lashes to prevent and detect engine failure. See steps on removing spark plugs and if they are tuned correctly.

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.

Choosing new wheels for a GMC Chevrolet truck. This project uses Speedway Motors GM Rally Wheels and new tires to enhance the appearance of the truck.

In this budget build, a GM rear end is upgraded in order to hold 400+ HP. See how spherical bushings are replaced in a used 8.5” GM 10 bolt rear end.