1978 GMC G15 Headlight Dimmer Switch Covers

Check out this headlight wiring and taillight wiring diagram.

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.

How to change brake pads, rotors and calipers using the Mustang II complete brake kit. Replace your drum brakes with disc brakes for performance and better braking ride. For use on Bobcat and Mustang II spindles.

A guide to choosing the right camshaft for your engine. See how to install a new LSR roller camshaft while upgrading valve springs and rocker trunnions.

An overview on swapping turbo mufflers for chamber mufflers on a 1969 C/10 pickup. See how to extend the muffler length using exhaust pipe.

After installing a new cam in a LQ4 6.0 motor, it is now time to swap the lifters. Follow this step by step guide on how to prep and install LS7 roller lifters.

Learn about performing an LS Swap in a 1972 Chevelle in this tech article. We'll discuss lessons learned from our Chevelle engine swap using a 500-horse 6.0.

Tech write-up and a video of a Lokar shifter install on an automatic transmission.

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.

Tim M. has tried to stay true to the vintage route, but sometimes, exceptions must be made. For example, the original oiling system's paper element and canister are functional, but an upgraded system will be more reliable.