Eaton Posi Differential 17 Spline 3.08-3.90 Ring Gear Pinion Ratio Rear 8.5in

If you're looking to get better traction for your 1963-1979 Chevrolet Corvette, this Eaton Posi limited-slip differential is a solid choice. It's designed to automatically manage power between your rear wheels, helping to prevent one from spinning freely when you hit slippery spots or accelerate hard. This means more of your engine's power gets to the pavement, improving your car's ability to put power down, whether you're cruising the street or running on the track.

Eaton built this Posi differential with performance and durability in mind. It uses pyrolytic carbon clutch discs, which are known for their smooth engagement and consistent operation. The gears inside are precision-forged, giving them extra strength to handle the demands of spirited driving. Because it's a clutch-type limited-slip, it engages automatically as soon as it detects a difference in wheel speed, so you don't have to do anything. Plus, it's designed to be rebuildable, meaning you can service it down the road to keep it performing at its best.

This differential is set up to work with ring and pinion gear sets that have a ratio between 3.08 and 3.90, and it fits the 8.5-inch rear axle commonly found in these Corvettes. While it comes ready to go, the spring packs can be tuned with different options if you want to adjust how it engages. Keep in mind that installing a differential like this often involves setting up the ring and pinion gears, which requires specific tools and expertise. It's a good idea to consult the manufacturer's installation instructions or a qualified mechanic to ensure it's set up correctly for your specific Corvette.