Packard Four-Hundred Muncie 4-Speed Transmission Parts

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.

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

Learn how Zach replaces a transmission and breakaway converter in his 55 Chevy, with some helpful tips along the way.

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

This is more than the story of a vintage sprint car. It's also the story of how a dynamic duo of "Speedy" Bill Smith and Jan Opperman toppled giants at the 1976 Hulman Classic.

We show you how to keep that old GM transmission when swapping in an LS engine. Our LS swap adapter kits make it easy!

This old sedan was untouchable in the early 60's.

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.

Speedway product guru Jeff K. wants to introduce you to another of his projects, "Elmer". There's a long history with Jeff and this vehicle, best told by Jeff himself.