Eaton Model : 912A556
Application: GM 8.5" 10 Bolt
Axle Shafts: 28 spline c-clip
Gear Ratios: 2.73 and up
The Eaton Detroit Truetrac is a worm gear style differential that provides constant power to both wheels while allowing for wheel speed differentiation. The design of these units works so well, the US military chose this type of unit as standard equipment on the Hummer H1
