Tuff Stuff GMC Street Engine Parts

Fuel injection is here to stay and we delve into the benefits of such retrofit systems for your classic muscle car or street rod in our EFI retrofit buyer's guide!

Jason Martin explains how to square the front end of a sprint car. He walks through the step by step process of squaring the front axle, adjusting the radius rods and setting the side to side. Check it out!

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.

A guide on how to tune and set sprint car shocks. Learn about valving numbers, the importance of dyno testing shocks and how bump rubbers help tune your race car.

Finish build sheet for a sprint car.