8.2 Buick Pontiac 3.55 Ring & Pinion

The Motive Gear 8.2 Buick Pontiac 3.55 Ring & Pinion is a performance differential gearset designed specifically for classic muscle car builds and restoration projects. This gearset is ideal for enthusiasts looking to enhance acceleration and drivability in vintage Buick and Pontiac platforms. It offers a balanced solution for those who want to improve both fuel economy and performance.

Constructed from premium forged steel, this ring and pinion set features precisely cut teeth that meet OEM tolerances and backlash specifications. The 3.55 gear ratio is engineered to reduce engine RPM at highway speeds while still providing significant torque multiplication at partial throttle. This makes it particularly beneficial for vehicles with modest displacement engines or older torque converters.

Mechanics and restoration shops working on first and second-generation Buick GSX, Pontiac GTO, and full-size luxury muscle cars will find this gear ratio optimal for street-driven builds. While the gearset is designed for compatibility with a properly prepared 8.2 differential carrier, installation will require a full differential service to ensure proper fit and function.