Eaton Posi Differential 30 Spline 1.30in Axle Shaft Diameter 2.76-3.42 Ratio Rear 8.875in

Eaton is well-known for their robust drivetrain components, and their Posi limited-slip differential is a prime example of that expertise. If you're looking to improve traction for your street rod, light-duty pickup, or even a tarmac-running race car, this differential is designed to help you get power to the ground more effectively. It works automatically, seamlessly preventing wheel slip so you can maintain control even when conditions get tricky.

This Posi differential uses pyrolytic carbon clutch discs, which are a key part of its smooth, automatic engagement. These clutches, combined with precision-forged gears, offer added strength and durability for demanding use. The design is also rebuildable, meaning you can service and tune it over time using various spring packs to adjust the pre-loads, tailoring its performance to your specific needs. It's built for rear axles with an 8.875-inch ring gear diameter and is compatible with 30-spline axle shafts and gear ratios between 2.76 and 3.42.

This differential fits a wide range of classic Chevrolet and GMC trucks and SUVs, including models like the 1964-1974 Chevrolet C10 Pickup, 1969-1974 Chevrolet Blazer, and 1975-1978 GMC K15 Pickup. Installation will involve setting up the differential within your rear axle housing, which typically requires specialized tools and knowledge. If you're rebuilding your rear end or upgrading to a limited-slip setup, this Eaton Posi unit is a solid option for improved performance and control.