Auto Trans Input Shafts

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.

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.

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

Learn about how aftermarket transmission coolers can help keep your transmission cool and the different options available for cooling with our expert guide.

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

Designing a steering system for your street rod or muscle car can be tricky. In this buyer's guide we'll show you how to choose the right steering U-joints, steering shaft, and accessories to complete the job quickly and safely.

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

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

We get a lot of questions about steering parts. Steve talks about some of the steering basics.

Learn more about GM steering column identification, GM steering column lengths, and GM steering column compatibility.