Eaton Posi Differential 28 Spline 1.20in Axle Shaft Diameter 3.08 & Up Ratio Rear 8.2in

If you're looking to get better traction for your street rod, light-duty pickup, or even a tarmac-running race car, this Eaton Posi limited-slip differential is a solid choice. It's designed to automatically manage power distribution between your rear wheels, preventing them from spinning independently during acceleration. This means you get improved grip and control, especially when you need it most.

This differential is built with strength and longevity in mind. It features precision-forged gears, which are notably stronger than standard gears, to handle the demands of spirited driving or racing. The clutch system uses pyrolytic carbon discs, known for their durability and smooth engagement. Unlike some other limited-slip units, the Posi operates seamlessly and automatically, so you don't have to do anything special to engage it. Plus, it's designed to be rebuildable, meaning you can service it down the road to keep it performing at its best. It's set up for axle shafts with a 28-spline count and a 1.20-inch diameter, and it works with rear ends that have a 3.08 or numerically higher gear ratio in an 8.2-inch housing.

This Posi differential fits a wide range of vehicles, including many classic GM models like the Chevrolet Chevelle, Buick Skylark, and Oldsmobile 442. It's a significant upgrade for anyone looking to put more power down effectively. You'll want to make sure you have the correct ring gear and pinion ratio (3.08 or lower numerically) for your specific rear axle housing, which should be an 8.2-inch unit.