When a 4L60 won't cut it and a Turbo 400's lack of overdrive has your engine howling on the highway, a 4L80E might be the solution to your transmission woes. Tracing its roots to the Turbo ...

See All 29 Photos 2.The 4L80E/4L85E looks like a lot of monkey motion inside. However, how power travels through this transmission is simple. We’re most interested in what Performance Automatic ...

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. In fact ...

BluePrint Engines and Gearstar offer a 632ci big-block Chevy-compatible crate engine with a 4L80E transmission combo, providing 815 hp and 775 ft-lb of torque. Available in carbureted or fuel ...