Auto Trans Valve Bodies

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

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

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.

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

Check out some cool overhead conversions to the Ford flathead V8 on display in the Museum of American Speed!

Learn what throttle and kickdown cables do, how to install them, and tips for troubleshooting issues like broken or stuck cables.

Pat talks about air solenoids for your air ride setup.

Today we take a look at the differences between proportioning valves (both fixed and adjustable models) and the residual pressure valves we offer in this buyer's guide.