The only logical transmission for our 4x4 was the 4L80E four-speed automatic transmission commonly found in 3/4- and 1-ton GM trucks and SUVs. It is essentially a four-speed TH400.

A give you a performance guide to the GM 4L80E Transmission and help out with the driveline of your next build.

Part 1 will cover the assembly of the transmission, while in a later issue of Super Chevy, Part 2 will show the actual installation of the 4L80E in our '67 Chevelle, including the stand-alone ...