GMC 100 4L80E Interior, Accessories and Trim Parts

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

A real-world guide to 4L60 transmission specs, strength, and swap tips.

Learn how to swap out an LS engine with a modern fuel injected engine into a hot rod for added horsepower, fuel economy, or throttle response. View a list of parts and helpful tips to complete the installation.

See how a 1969 Chevelle gets an upgraded grille! Learn the pros of using the Dynacorn trim and extensions and some helpful tips for a successful install.

In this Tech Tip, John answers a customer question about the Speedway Motors fiberglass T-Bucket kit bodies, and the potential need for reinforcement.

Mick Rau has a garage full of cool cars, but this Hirohata-inspired Merc is a standout.

In this Tech Tip, John answers a customer question about what would be needed to swap some additional power in place of his anemic 233c.i. Ford.

Need holiday ideas for the gearhead in your life? This handy guide will steer you in the right direction.

Learn the proper steps in upgrading your air cleaner assembly to ensure clean air, allowing your engine to more easily make the power that it should.

Speedway Motors employee Jess M. talks about the custom battery tray and cables she built for her '33 Ford.