Powermaster GMC Truck Accessories Engine Parts

Decode, ID, and upgrade your GM 12-bolt rear end. Learn axle specs, gear ratios, and best performance parts upgrades.

Professional insight on some useful crate engine tools that will improve your engine building experience.

Pat talks about our 67-72 pickup rear end housing and some of the options we have for it.

Steve provides a step-by-step guide to install the Speedway Motors GM 10-Bolt Polished Finned Aluminum Rear End Cover.

Keep your rear cylinders running cool in a high performance engine by installing a water bypass kit to the intake manifold.

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.

Speedway Motors created a new expansion tank for coolant or oil that is well hidden and mounts inside the fender or on the front of the core support. Watch this video to learn how to install the tank.

A guide on removing and installing a new electric motor kit for exhaust cutouts.