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Filthy Motorsports: Store > Chrysler 8.75"
Chrysler 8.75" Axle Parts, Gears, and Upgrades

Axle Specifications:
Ring Gear Diameter: 8.750
Diff Cover Bolts: --
Ring Gear Bolts: 12 (3/18"x24 LH)
Axle Spline Count: 30
Axle Shaft Style: Semi-Float
Pinion Diameter: 1-3/8" (41 Case)
1-3/4" (42 Case)
1-7/8" (89 Case)
Pinion Splines: 29 (41 Case)
10 (42 Case)
29 (89 Case)
Pinion Splines: 29
Pinion Support: No
Carrier Breaks: No
Dropout Carrier: Yes

Torque Specifications:
Pinion Preload New: (41) 13-15 in-lbs
(42) 15-25 in-lbs
(89) 14-19 in-lbs
Pinion Preload Reused: (41) 6-8 in-lbs
(42) 7-10 in-lbs
(89) 14-19 in-lbs.
Ring Gear Backlash: .006" to .010"
Ring Gear Bolt Torque: 55 ft-lbs
Carrier Bearing Caps: 90 ft-lbs

Popular Applications:
Chrysler Imperial 1961 - 1973 Rear
Dodge Challenger 1970 - 1973 Rear
Dodge Charger 1968 - 1973 Rear
Dodge Dart 1961 - 1973 Rear
Plymouth Barracuda 1964 - 1973 Rear
Plymouth Road Runner 1968 - 1973 Rear

Axle Images:


Axle Details
The Chrysler 8.75" axle was the primary axle assembly used in most non-compact (and some high performance) Dodge, Chrysler, and Plymouth cars through 1973. This axle features a drop-out style carrier with a 8-3/4" ring gear, 30 spline axle shaft, and was available in three different case styles with different pinion shaft diameters. This axle can easily be identified by its drop-out style 3rd member and the following markings: The '741' (41 case housing) will usually have a large 'X' cast on the left side, the '742' (42 case housing) usually has a large '2' cast on the left side of the carrier, and the '489' (89 case housing) will have a large '9' cast on the left side.
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