Eaton
Eaton Detroit Truetrac Differential 28 Spline 1.20in Axle Shaft Diameter 2.73 & Up Ratio Rear 8.5in
Regular price
$920.00
Shipping calculated at checkout.
912A556
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.
PRODUCT SPECIFICATIONS
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
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
DIFFERENTIAL PRODUCT SELECTOR
| 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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