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DETROIT TRUETRAC® DIFFERENTIAL; GM 8.5IN. 10 BOLT; 28 SPLINE; 2.73 AND UP
| Product Name |
Eaton Detroit Truetrac Differential
|
| Catalog Number |
912A556
|
| Product Weight |
26.17 lb
|
| Catalog Notes |
All Eaton differentials made for General Motors 8.5" and 8.6" axles require special bearings. For axles with small bearing bores (race O.D. or 2.89"), usually found on vehicles prior to 1999, bearing LM102949 and race LM102911 are required. For axles with large bearing bores (race O.D. of 3.06"), usually found on vehicles from 1999-2013, bearing LM603049 and race LM603012 are required. Manual locking hubs recommended for front axle applications.
|
| Ring gear ratio |
2.73 & up
|
| Gear spline tooth count |
28 EA
|
| Axle shaft diameter |
1.2 in
|
| Ring gear size |
8.5 in
|
| Differential type |
Limited Slip (LSD)
|
| Vehicle usage |
Off-Road: Work Truck / Towing
On Road: Work Truck / Towing Off-Road: Light Trail / Sand Sports On Road: Street and Muscle On Road: Restoration On Road: Drag Racing On Road: Circle Track |
| Model year start | Model year end | Vehicle make | Vehicle type (model) | Axle location | Axle description | Gear ratio | Model product notes |
|---|---|---|---|---|---|---|---|
| 1971 | 1989 | General Motors, Chevrolet, Pontiac, Buick, Oldsmobile | Passenger Car | Rear | Gm 10 bolt C-Clip | 2.73 & up | |
| 1972 | 1989 | General Motors | Half-Ton Truck | Rear | Gm 10 bolt C-Clip | 2.73 & up | |
| 1978 | 1989 | General Motors | Three Quarter-Ton Truck | Rear | Gm 10 bolt C-Clip Van | 2.73 & up |
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