Detroit TrueTrac Differential - 28 Spline - 2.73 Ratio and Up - 8.5 in - GM 10-Bolt AN Adapter Cap All of them have the

All of them have the same internal specifications

Increased Horsepower

Cranking Power for up to 10

Stick / Linkage

Detroit TrueTrac Differential - 28 Spline - 2.73 Ratio and Up - 8.5 in - GM 10-Bolt AN Adapter Cap All of them have theDetroit Truetrac 912A556 28 Spline 1. 20 in. Axle Shaft Diameter 2. 73 and Up Ring Gear Pinion Ratio First Helical Gear Differential Eliminates Need For Wearable Parts Maintenance Free Traction Proven Design And Effective Performance Durable Smooth Quiet Operation The legendary Detroit Locker began the revolution in performance differentials and still leads the industry today as an Eaton brand. The Detroit Locker is the most durable and dependable