GM Differentials. GM Drive Axle, GM Axle.

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GM 7.5" Rear Differential.

GM Passenger Car Differentials 77-93
*Except the H body Monza, Vega, Starfaire.

Camaro, Z28 82-97
Chevrolet S-10 & S-15 77-97
Pontiac Firebird & Trans Am 82-97
        
GM 8.2" non BPO Rear Differential.         

Chevrolet 65-70
Chevelle 64-72
Chevy II 64-70.5
Camaro 67-70
Nova 70-72
        
GM 8.5" 10 Bolt Rear Differential.                 

Chevrolet 70-76
Trans-AM 72-81
Chevelle 70-76
C10, K10 & K20 Front 77-87
Chevy II 70-75
Blazer Front 77-91
Camaro 70-81
C10, K10 & Blazer 80-94
GTO/Firebird 70-81
K1500 Front IFS 88 & Up
Olds F-85 70-76
K2500 Front IFS 88 & Up
Z-28 72-81         
        
GM 8.875" 12 Bolt Car Rear End Differentials.         
        
Chevrolet 65-72
Firebird 70-72
GTO 70-72
Nova 70-72
Chevy II 65-72                            
Chevelle 65-72
Olds F85 68-69
Camaro 67-72                   

GM 8.875" 12 Bolt Truck Rear Differential.

G20, G25 64-82
G10, G15 64-81

K10, K15, C10, C15 64-82
          
GM 9.5" 14 Bolt Rear Differential.         

C10, C15, C20 88-96
C30, C35 83-96

K10, K15 88-96
K20, K25 81-96
K30-K35 89-96

3/4 - 1 ton 81-92
3/4 - 1 ton Front IFS 88-96
                 
GM 10.5" Rear End Differential.         

3/4 Ton 1 Ton 73-92

G30, G35 73-96

K20, K25 73-96
K30, K35 73-96

C20, C25 73-96                   
C30, C35 73-96                   
        
GM 11.5" Rear Differentials.                 

C/K Truck 2001-UP
G Van and P-Truck 2001-UP
1 Ton All Models 2001-UP
GM Differentials - GM 11.5,GM 12P,GM 12T,GM 14T,GM 55P,GM 55T,GM 7.2,GM 7.5,GM 7.6,GM 7.75,GM 8.0,GM 8.2,GM 8.25,GM 8.5,GM 8.6,GM 9.25,GM 9.5,GM BOP,GM Cast Iron Vet,GM H072,
10.5 GM Truck 14 Bolt Full Float
11.5 GM Truck 14 Bolt Full Float
7.2 IFS Front
7.5 and 7.625 GM 10 Bolt
7200 IFS 8.25 Front Differential
8.0 GM 10 Bolt
8.2 GM 55-64 Drop Out
8.2 GM 65 - 72 10 Bolt Chevrolet
8.25 GM 4x4 Front 7200 IFS
8.5 and 8.6 GM 10 Bolt
8.878 GM Car 12 Bolt
8.878 GM Truck 12 Bolt
8600 IFS 9.25 Front Differential
9.5 GM Truck 14 Bolt Semi Float
CORVETTE 1963 - 1979
Oldsmobile O 1967 - 1970
GM Differential, rear differentials, front rear, rear end, diff gears, gear, Buy and Sell, Find the GM differentials you need at a price you can afford. GM Trac Lok, Power Brute, Power Lok, Ultralocker
GM 10-bolt 8.5-inch Differentials
Original gear ratios were 2.41:1, 2.56:1, 2.73:1, 3.08:1, 3.43:1, 3.73:1 and 4.10:1. You can find a 10-bolt 8.5-inch differential in any of these cars or trucks:

1971-'76 Chevrolet full-size cars
1994-'96 Impala
1971-'81 Buick full-size cars
1973-'77 Buick Gran Sport
1972-'77 Pontiac GTO and Le Mans
1970-'81 Chevy Camaro and Z28
1970-'81 Pontiac Firebird
1971-'77 Olds Cutlass and F-85 and Pontiac Grand Prix
1971-'79 Chevy II, Nova, Buick Skylark and Olds Omega
1973-'77 Chevelle, Malibu and El Camino
1971-'77 Pontiac Ventura and Phoenix
1971-'81 Pontiac Bonneville
1973-'77 Monte Carlo
1973-'77 Buick Apollo, Regal and Century
1980-'94 Chevy ½-ton and ¾-ton pickups
1977-'94 GMC Jimmy and Chevy Blazer

 A 10-bolt front axle was used on GM 4WD vehicles as well. It was available in three ring gear choices. Axle codes were GU6 (3.43:1) GT4 (3.73:1) and GT5 (4.10:1). You can find a front 10-bolt in these trucks:

1977-'87 K and V-series half- and three-quarter-ton Chevy pickups
1977-'91 Jimmy and Blazer 4WD
1988-'97 K1500 and K-2500 pickups 
GM 10-BOLT Differential, Rear end.
The GM 10-bolt is named for the number of bolts on the cover; ring gear diameter is 7 1/2 inches. Variations of this can be found in the rear of GM S-trucks and some Isuzus, and in the front of S-trucks.
GM 10-BOLT Differentials.
This GM 10-bolt has a larger 8 1/2-inch ring gear diameter, replaced the Dana 44 that was used in the front of some pre-1977 GM's. It can also be found in the back of 1983-91 1/2-tons and in the front of 1983-87 1/2-tons.
GM 12-BOLT Differential.
The stronger 12-bolt, with an 8 7/8-inch-diameter ring gear, can be found in various 1964-82 GM 1/2- and 3/4-ton front- and rear ends.
GM 14-BOLT DIFFERENTIALS.
The smaller GM 14-bolt has a 9 1/2-inch ring gear diameter. It was used in the rear of 1964-and-later GM pickups, and in the rear of 1984-91 3/4-ton Suburbans.
GM 14-BOLT Differential. Rear End.
With a 10 1/2-inch-diameter ring gear, the biggest 14-bolt GM rearend looks much like a Dana 70, and is but a few thousandths of an inch shorter in ring gear diameter. This axle is commonly used with big engines and/or overly large tires. It was used under 1973-87 3/4-tons.
We offer service parts for all GM Axles for the common 7.5", 8.5", 8.6" 10 bolt and the new 11.5" 14 bolt, as well as 7.25", 8.25" and 9.25" front differentials. Our selection also covers the 8.2" 10 bolt and 8 7/8" 12 bolt axles.
10.5" Corporate 14 Bolt Differential is a heavy duty differential that is used by Chevrolet and GMC. This differential is of the full floating design and has a ring gear with a diameter of 10.5 inches (270 mm). This differential has 14 bolts holding on the differential cover. The ring gear is held on with 12 bolts.
GM 7.5"
GM 7.2"
GM 7.2" Differential. Rear End.
GM 7.5" Differential. Rear End.
GM 8.2 - 8.5"
GM 8.2 - 8.5"
GM 8.2" and 8.5" Differential. Rear End.
GM 8.2" and 8.5" Differential. Rear End.
GM 8.875" Cars
GM 8.875" Trucks
GM 8.875" Car Differential. Rear End.
GM 8.875" Truck Differential. Rear End.
GM 10.5" Trucks
GM 9.5"
GM 10.5" Truck Differential. Rear End.
GM 9.5" Differential. Rear End.
GM Differential Identification Chart.
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