Yukon 70-96 Chevrolet Caprice / 73-83 Chevrolet Malibu Re-Gear Kit - 8.5in Diff 30 Spline 3.90 Ratio

This Yukon re-gear kit is built around a 3.90 ratio ring and pinion set, a popular choice for improving acceleration in vehicles equipped with the GM 8.5-inch differential. The 30-spline pinion gear and 10-bolt ring gear are designed to work together to change how your engine's power is delivered to the wheels. This ratio is often chosen to give a noticeable boost in off-the-line performance, making your car feel much quicker when you launch from a stop.

When you're rebuilding or upgrading a differential, having all the right small parts is crucial. This kit takes the guesswork out of sourcing those components, as it includes not only the ring and pinion gears but also all the necessary bearings and installation hardware. The bearings included have a 2.25-inch outer diameter, ensuring a precise fit within the GM 8.5-inch housing. This comprehensive approach means you'll have what you need to complete the re-gear job, whether it's for a classic muscle car, a hot rod project, or a daily driver looking for improved responsiveness.

This kit is designed to fit a wide range of GM vehicles from the 1960s through the 1990s, including popular models like the Chevrolet Caprice, Chevrolet Malibu, and Pontiac Firebird. By changing the gear ratio, you're essentially telling your engine to spin more times for each rotation of the driveshaft, which translates to more torque at the wheels. This can significantly improve your vehicle's launching ability and give you that exciting acceleration you're looking for.