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The Eaton Detroit Truetrac 914A583 is a helical-gear limited-slip differential engineered for the Chrysler 8.75 in. rear axle. It fits 33-spline axle shafts with a 1.31 in. shaft diameter and accommodates ring gear ratios spanning 2.76 to 4.56. Chrysler, Dodge, and Plymouth passenger cars, half-ton trucks, wagons, and vans produced in the 1957-1974 model range are covered, along with various performance applications from 1965 onward. These 33-spline units are specifically designed to fit axles cut with 45-degree pressure angles. The axle location is rear. Applications span street and muscle, drag racing, circle track, restoration, rock crawl, extreme off-road, and work truck or towing use. Call us to confirm proper fit for your specific axle assembly.
- Ring Gear Ratio: 2.76 - 4.56
- Gear Ratio: 3.73 - 4.56
- Differential Type: Limited Slip (LSD)
- Axle Description: Chrysler 8.75 in.
- Axle Location: Rear
- Gear Spline Tooth Count: 33
- Axle Shaft Diameter: 1.31 in.
- Ring Gear Size: 8.75 in.
- Pressure Angle: 45-degree (axles must be cut to this spec)
- Vehicle Make: Chrysler, Dodge, Plymouth, Various Performance Applications
- Vehicle Type: Passenger Car, Half-Ton Truck, Wagon, Van, Various Performance Applications
- Model Year Range: 1957-1974 (select applications from 1965)
- Special Application: Performance
- Vehicle Usage: Street and Muscle, Drag Racing, Circle Track, Restoration, Rock Crawl, Extreme Off-Road, Light Trail / Sand Sports, Work Truck / Towing (On-Road and Off-Road)
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Features
- Detroit Truetrac helical-gear limited-slip differential (LSD)
- Fits Chrysler 8.75 in. rear axle, axle location: rear
- 33-spline, 1.31 in. axle shaft diameter
- Designed for axles cut with 45-degree pressure angles
- Ring gear ratio coverage: 2.76 to 4.56
- Suited for street, drag racing, circle track, off-road, and towing applications
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