Speedway Motors, 700R4, Racing 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.

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

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.

Speedway Motors announced today it will celebrate racers and the sport of racing with Racer Appreciation Week, Jan. 23-29.

Speedway Motors announced today the introduction of a new IMCA Modified Spec Racing Engine as they kick off the 2025 race season along with discounts Jan. 27-Feb. 2 to help their customers get ready for race season.

These new suits from Speedway Motors offer driver protection for any budget.

Speedway Motors just added some exciting new options to our line of racing harnesses.

The dyno at the Speedway Motors Racing Engine shop is always humming. We set up a camera in the cell to catch a few of the engines that have passed through the door recently.

Speedway Motors, a manufacturer, retailer, and distributor of high-quality automotive parts and racing products, will introduce new racing products in their booth (#4101) at the 2025 PRI Show Dec. 11-13 in Indianapolis, Ind.