GM Turbo 400 Transmissions


Enthusiasts have embraced the reliable GM Turbo Hydra-Matic 400 three speed automatics for years and the popularity of these transmissions is not slowing down.  With his proven style, Ruggles walks through the step by step rebuild and performance upgrade procedures in a series of full color photos. 


The GM Turbo Hydra-Matic 400 transmission was used in millions of full and mid sized cars, trucks, and SUVs since its launch in 1964. The Turbo 400 became the automatic transmission of choice for enthusiasts everywhere due to its durability and simplicity. The Turbo 400 can easily handle work in a drag car, off road truck, hot rod or custom car, and any vehicle needing a durable reliable automatic transmission. It does not rely upon computer controls, and can be adapted to a wide range of configurations.

Rebuilding the Turbo 400 is not particularly difficult, but it does require care and specific attention to details. The procedure and these critical details are all reviewed in depth in this book.

This book includes removal of the transmission from a typical vehicle, complete teardown, and step by step reassembly. Some tips and advice for those planning to use their Turbo 400s in high performance applications are also included.