The First Book Dedicated To The 8.8 & 9 Inch Differentials Step-By-Step Rebuild & Gear Ratio Change Information Covers Factory Assemblies & Most Popular Aftermarket Units As Well The Ford 8.8 & 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, & race cars. Built from 1957-1986, the 9 Inch Ford differential is used in a huge range of high-peformance Ford and non-Ford vehicles because of it's rugged construction, easy-to-setup design, and large aftermarket support.
The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
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