Zumbrota Drivetrain Axle Assy 1965-1969 GM C10 3.42 ratio Positraction Diff RAA435-862A-P

The Zumbrota Drivetrain RAA435-862A-P is a remanufactured axle assembly designed for specific C10 models. This assembly features a 3:42 gear ratio and a Posi-traction differential. It has undergone a thorough inspection process, including checks for straightness, cracks, and surface wear.

Internal components like ring and pinions, gears, clutches, and carriers are inspected and tested. All bearings and seals are replaced. The gear backlash is set to ensure proper lubrication and quiet operation, with precise setup and longevity achieved through inch-pound measurements for tooth contact patterns and rolling torque. Axle tubes are inspected for OEM standards of straightness. Zumbrota utilizes an exclusive hydro-blast rinse and sandblasting procedure, followed by a proprietary shot-enticed deep cleaning process.