Passenger Car Rear Axle Identification
Axles are manufactured by Chevrolet Buffalo, Chevrolet Gear and Axle, Oldsmobile, Pontiac and GM of Canada (McKinnon). Divisional Manufacturer code letters will be metal stamped on the axle tube adjacent to the carrier for field identification (see example). Letters and numerals 1/4" high are metal stamped on right front inboard side, 3" outboard of carrier or are located on a metal tag attached to cover bolt.FIELD IDENTIFICATION
4JF C 218 1
AXLE CODE MANUFACTURER DAY OF 1 - FOR DAY SHIFT
IDENTIFY YEAR BUILT 2 - FOR NIGHT SHIFT
MANUFACTURER IDENTITY
O - OLDSMOBILE P - PONTIAC G - CHEVROLET GEAR AND AXLE C - CHEVROLET BUFFALO K - GM OF CANADA, ST. CATHERINES (McKINNON)
1983 AXLE IDENTIFICATION CODES "B" SERIES
(*INDICATES POSITRACTION)
2.41 RATIO
RING
CODE GEAR
8GF 7.50
8FA 7.50
* 8WY 8.75
* 2TT 8.75
2.56 RATIO
RING
CODE GEAR
8GA 7.50
8YD 8.75
8YM 8.75
*8YU 8.75
*8YR 8.75
*2TU 8.75
2.73 RATIO
RING
CODE GEAR
8FC 7.50
8GB 7.50
8ZE 8.75
8YE 8.75
8YN 8.75
*8WW 8.75
*8ZW 8.75
*8YW 8.75
*8YS 8.75
*2TW 8.75
2.93 RATIO
RING
CODE GEAR
8GG 7.50
8YF 8.75
*2TX 8.75
*8YX 8.75
3.08 RATIO
RING
CODE GEAR
8ZJ 8.75
8YJ 8.75
2TJ 8.75
*8YY 8.75
*2TY 8.75
*8ZY 8.75
3.23 RATIO
RING
CODE GEAR
8YK 8.75
2TK 8.75
*8YZ 8.75
*2TZ 8.75
*8ZZ 8.75
8ZK 8.75
1983 AXLE IDENTIFICATION CODES "G" SERIES
(*INDICATES POSITRACTION)
2.29 RATIO
RING
CODE GEAR
2AH 7.50
*2BH 7.50
2AT 7.50
*2BT 7.50
2.41 RATIO
RING
CODE GEAR
2AJ 7.50
*2BJ 7.50
2AZ 7.50
*2BZ 7.50
2.56 RATIO
RING
CODE GEAR
2AA 7.50
*2BA 7.50
2.73 RATIO
RING
CODE GEAR
2AB 7.50
2AL 7.50
*2BL 7.50
*2BB 7.50
2AX 7.50
*2BX
7.50
3.08 RATIO
RING
CODE GEAR
2AC 7.50
*2BC 7.50
2AV 7.50
*2BV 7.50
3.23 RATIO
RING
CODE GEAR
2AU 7.50
*2BU 7.50
1983 AXLE IDENTIFICATION CODES "F" SERIES
(*INDICATES POSITRACTION)
2.73 RATIO
RING
CODE GEAR
*4PW 7.50
2.93 RATIO
RING
CODE GEAR
4JF 7.50
*4JX 7.50
*4PX 7.50
3.08 RATIO
RING
CODE GEAR
4JG 7.50
*4JY 7.50
*4PY 7.50
4PG 7.50
3.23 RATIO
RING
CODE GEAR
4JH 7.50
*4JZ 7.50
*4PZ 7.50
3.42 RATIO
RING
CODE GEAR
4JJ 7.50
*4JR 7.50
3.73 RATIO
RING
CODE GEAR
4JK 7.50
*4JQ 7.50
1983 AXLE IDENTIFICATION CODES "T" SERIES
(*INDICATES POSITRACTION)
3.36 RATIO
RING
CODE GEAR
CQM 6.50
3.62 RATIO
RING
CODE GEAR
CQN 6.50