The Yukon Dura Grip limited-slip re-gear kit upgrades GM 8.5" differentials with a hardened ring-and-pinion set and positraction unit to improve traction and durability. This 3.73 ratio kit includes the Dura Grip LSD, ring and pinion, bearings and all required installation hardware. Coverage spans many GM 8.5" applications, including 1970–1996 Chevrolet Caprice and classic 1970–81 Firebird Trans Am and 1970–77 GTO models.
Yukon Gear 70-96 Chevrolet Caprice Limited Slip & Re-Gear Kit - 8.5in Diff 28 Spline 3.73 Ratio