4R70W, Engine Control Modules

There are a lot of choices when it comes to automatic shifters, and we’ll help unpack all the options and features in our automatic shifter buyer’s guide

Learn what a manual valve body can and cannot do for your automatic transmission and performance driving needs

Looking to swap the venerable LS engine into your hot rod, muscle car, or classic truck? Take a look at our detailed identification guide for Gen III/IV LS engines before you hit the salvage yard or swap meet!

While everyone is looking for a 6.0 LS, don’t count out the original 5.7 LS1 engine for your next LS swap performance build

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

A quick review of the Performance Tool W41036 Deluxe Engine Leveler available at Speedway Motors.

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

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

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.

How does a cooling system work? Why is your engine overheating? What parts should you be giving your attention to? This guide answers all your questions.