Team Chevelle

1968 Chevelle Differential Codes

Rear Axle Code information is stamped on the axle housing for this year.. contains a 7 digit code that tells the stock ratio, month / day of build as well as the production facility, either W - Warren or B - Buffalo
Format is: CA0403B for a 3.08 rear ratio built on April 3rd at the Buffalo plant.

Rear Numerical Codes
Code Positraction Ratio
CA 3.08
CB 3.36
CC 3.73
CD X 3.07
CE X 3.08
CF X 3.31
CG X 3.36
CH X 2.73
CI X 3.73
CJ 3.08
CP 2.73
CR X 3.70
CU X 3.73
CU X 3.73
CV 3.70
CW 3.31
CX 3.07
CX 2.73
CY 3.07
F1 X 2.73
FH 2.73
FK X 3.08
FL 3.36
FM X 3.36
FN 3.55
FO X 3.55
FO X 3.7
FP 3.70
K2 3.55
K3 X 3.55
K4 3.73
K5 X 3.73
K6 X 4.1
K7 X 4.56
K8 X 4.88
KA 3.55
KB X 3.55
KC X 2.73
KD 2.73
KF X 3.55
KJ 3.55
KK X 4.1
KM X 4.56
KO X 4.88
KW 2.73
KX X 3.07
KY X 3.31
KZ 3.31

1968