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The Ford 8.8- and 9-inch rear differentials are two of the most popular and best performing differentials on the market. While the 8.8-inch differential is commonly used in late-model Mustangs, the 9-inch is the most popular and arguably the most dominant high-performance differential for muscle cars, hot rods, custom vehicles and race cars. Built from 1957- 1986, the 9-inch Ford differential is used in a huge range of high-performance Ford and non-Ford vehicles because of its rugged construction, easy-to-setup design, and large aftermarket support. The differentials need to be rebuilt after extensive use and need a variety of different ratios for top performance and special applications. This Workbench book provides detailed step-by-step photos and information for rebuilding them. It shows how to disassemble the rear end, identify worn ring and pinion gears and other damage or wear, and proceeds to show step-by-step rebuilding of the differential. It also explains how to select the right differential hardware, bearings, seals, and other parts, as well as how to set ring and pinion backlash, so the rear end operates at peak efficiency. Aftermarket 9-inch performance differentials from manufacturers, such as Currie, Moser and Strange, will be reviewed and the reader will learn how to rebuild and set-up these high-performance aftermarket differentials. The book provides a comprehensive 9-inch identification chart to ensure readers properly identify the model and specifics of the differential. • Step-by-step rebuild and gear ratio change information is indispensible for enthusiasts maximizing performance for street and drag strip. • Covers factory assemblies and the most popular aftermarket units as well. A complete installation of a custom 9-inch into a Tri-Five Chevy is detailed from start to finish. How to select the right differential hardware, bearings, seals, and other parts.
Author: Joe Palazzolo
Illustrations: 400 color photos