GM Automatic Overdrive Trans Guide

The S-A BOOKS SA140 is a book that covers GM automatic overdrive transmissions, specifically the 700-R4, 4L60, and 4L60E models. Written by expert mechanic and drag racer Cliff Ruggles, this guide details the history, identification, disassembly, repair, upgrade, and assembly processes for these popular transmissions.

It includes information on testing transmissions before installation and explores high-performance modifications, including internal parts, shift kits, and torque converters. The book also addresses common installation challenges such as mounting, shifters, linkages, and wiring harnesses. Additionally, it features a section on swapping these transmissions into earlier performance and musclecar chassis.