Willys Speedway 700R4 Transmission Parts

The 700R4 is a great choice when it's time to upgrade your classic car or truck with an overdrive transmission. Here's what you need to know about GM's famous 4-speed automatic.

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

Follow along as Jeff installs an early 700R4 transmission for the big block in his 1967 Chevelle. See how this unit is upgraded and converted to a later 30 spline style.

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 new steel bellhousing from Speedway Motors is made for everyone who wants to run three pedals without spending a fortune or relying on a crusty original.

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

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

Follow Tim as he swaps tail housings and covers on a T-5 transmission

Pat shows off how easy wiring your LS can be with our LS wiring kit.

A brief overview of the steps Speedway Motors takes to ensure you get a quality differential.