Yukon Gear Dura Grip Positraction For GM 12 Bolt Car w/ 30 Spline Axles / 3.08 To 3.90 Ratio

If you're looking to get the most out of your classic GM muscle car, a limited-slip differential is a key upgrade for putting power down evenly. This Yukon Gear Dura Grip positraction unit is built for GM 12-bolt rear ends, specifically for vehicles with 30-spline axles and gear ratios ranging from 3.08 to 3.90. It's designed to provide smooth, yet aggressive traction, giving you better grip whether you're cruising or hitting the drag strip.

Yukon Gear has put a lot into making this unit durable and reliable. The case is made from strong nodular iron, and the spider gears are forged from 4320 chromoly steel, which is known for its toughness. It also uses composite clutches that work with the spider gears to distribute power to both wheels. This unit is also fully rebuildable, meaning you can service it down the road to keep it performing at its best. It fits a wide range of GM vehicles from the mid-60s to early-70s, including popular models like the Chevrolet Chevelle, Impala, and Pontiac Firebird.

When you're installing a limited-slip differential, it's important to use the correct gear oil and additives recommended by Yukon Gear to ensure proper break-in and long clutch life. This unit is designed to work with both standard and thicker gear sets within its specified ratio range.