GM 8.2" and 8.2" BOP Axle Parts, Gears, and Upgrades
GM 8.2" Axle Models:
GM 8.2"
(Standard)
GM 8.2" BOP
(Buick, Oldsmobile, Pontiac)
Axle Specifications:
Ring Gear Diameter:
8.200
Ring Gear Bolts:
10
Axle Spline Count:
28
Axle Shaft Style:
Semi-Floating
C-Clips:
Yes / No
Crush Sleeve
Yes
Pinion Nut:
1-1/8" / 1-1/4"
Pinion Support:
No
Carrier Breaks:
2.76 / 3.08
BOP: 2.76 / 2.93
BOP: 3.23 / 3.31
Dropout Carrier:
No
Torque Specifications:
Pinion Preload New:
12 to 15 in-lbs
Pinion Preload Reused:
6 to 7 in-lbs
Ring Gear Backlash:
.006" to .010"
Ring Gear Bolt Torque:
55 ft-lbs
Carrier Bearing Caps:
60 ft-lbs
Popular Applications:
Chevy Bel Air
1964 - 1972
Rear
Chevy Camaro
1967 - 1970
Rear
Chevy Impala
1964 - 1972
Rear
Chevy Nova
1964 - 1972
Rear
Oldsmobile Cutlass
1964 - 1972
Rear
Pontiac Firebird
1967 - 1972
Rear
Pontiac GTO
1964 - 1972
Rear
Axle Images:
Axle Details
The GM 8.2" axle is available in two configurations: The standard GM 8.2" version features an 8.2" diameter ring gear with 28 spline axle shafts that are held in place using c-clips. The 8.2" BOP (Buick, Oldsmobile, Pontiac) model is slightly different in that it uses pressed on axle bearings and instead of c-clips, the axles are held in place via bolts. Identifying which axle is which is easy as the standard model has a perfectly round differential cover while the GM 8.2" BOP axle has an irregular shape.
Note: This axle has a Carrier Break and gear changes may require a different carrier or thick gears.
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