Hays Buick Roadmaster 700R4 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.

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!

Nick Hoesing built a do-it-all hot rod in the one car garage attached to his house. He's since logged almost 50,000 miles and quite a few dragstrip passes in his cool little Model A roadster.

Our Tech Expert installs an F1 steering box in his roadster to give the steering a traditional feeling. Follow his process from testing fit to welding.

Tim talks about the process of adapting a full size 1932 Ford Radiator to fit in his 1929 Ford Roadster project.