Complete Posi Unit for GM 8.5" Rear Axle Assembly (28 Spline, 3.73 Ratio)
Includes: - Complete Posi Unit for GM 8.5" Rear Axle Assembly
Fits Models: - Chevrolet Camaro - Chevrolet Nova - Pontiac Firebird - Buick Skylark - Oldsmobile Cutlass
Model Years: - 1971–1981
Submodels: - Z28, SS, Formula, Trans Am, GS, 442, GTO, A-body
Engine Options: - 5.0L V8 (305), 5.7L V8 (350), 6.6L V8 (400), 7.5L V8 (454)
Description: This Complete Posi Unit is designed for GM 8.5" rear axle assemblies, providing enhanced traction and performance. It features a 28-spline design and a 3.73 gear ratio, making it ideal for street and performance applications. This unit is a direct replacement for various GM models from the early 70s to the early 80s, ensuring a reliable upgrade for your vehicle's rear end.
Features: - 28 spline count for compatibility - 3.73 gear ratio for improved acceleration - Designed for GM 8.5" rear axles - Enhances traction and performance - Direct replacement for select GM models