Differential

Camaro 1967-1969
10-bolt 12-bolt
Casting Number 3894859NF 3894860NF
Bolt Diameter 3/8 3/8
Ring Gear Diameter 8.20 8.875
Pinion Diameter 1.438 1.625
Axle Splines 28 30
Overall Dimensions:    
Axle tube flange to axle tube flange 54 1/4 54 1/4
Between centerlines of spring seats 42 7/16 42 7/16
Shaft Length 29 33/64 29 9/16

Below is a list of positraction casting numbers. Gearing "up" or "down" indicates that the posi unit is applicable to gearing numerically higher or lower respectively.

Axle
Casting Number
Series
Gearing
12-bolt passenger ED 32088
2
2.73:1 and down
30140PM1
3
3.08 to 3.73:1
EDB 30174
4
3.90:1 and up
Corvette ED 32297 PW 3
3
2.73 to 3.70:1
EDB 32298
4
3.90:1 and up
8.5 Corporate 410408N
3
2.73:1 and up
410409N
2
2.56:1 and down
8.2 10-bolt ED 32118
2
2.73:1 and down
ED 30116
3
3.08:1 and up

 

Alternator Axle Camshaft Carburetor
Connecting Rod Crankshaft Differential Distributor
Exhaust Manifold Intake Manifold Piston Transmission
Water Pump      
Chevy-Camaro.com
Chevy-Camaro.com
Chevy-Camaro.com