1985 Corvette Axle Identification Codes

Model 36 Model 44

P/N Code Ratio P/N Code Ratio

14087675 5YN 2.73 14087652 5YX 3.07 (Z-51)

14087676 4YJ 3.07 (Z-51) 14084122 5YB 3.07

14087678 4YL 3.07

Axles are manufactured by Dana and consist of a Model 36 (7 7/8" ring gear) for automatic transmission vehicles and a model 44 (8 1/2" ring gear) for manual transmission vehicles. Axles are identified by part number, axle code, ratio, and date code etched on upper surface of the differential carrier.


1985 AXLE IDENTIFICATION CODES "F" SERIES
(*INDICATES POSITRACTION)


3.08 Ratio 3.23 Ratio 3.42 Ratio 3.73 Ratio

Ring Ring Ring Ring
Code Gear Code Gear Code Gear Code Gear

8JA 7.625 8JB 7.625 8JC 7.625 8JD 7.625
8KR 7.625 *8JQ 7.625 8KA 7.625 8KB 7.625
*8JP 7.625 *8PQ 7.625 *8PR 7.625 *8PS 7.625
*8PP 7.625


1985 AXLE IDENTIFICATION CODES "T" SERIES
(*INDICATES POSITRACTION)

3.36 Ratio 3.62 Ratio

Ring Ring
Code Gear Code Gear

TA 6.50 TB 6.50


1985 AXLE IDENTIFICATION CODES "G" SERIES
(*INDICATES POSITRACTION)


2.29 Ratio 2.41 Ratio 2.56 Ratio 2.73 Ratio 3.08 Ratio 3.73 Ratio

Ring Ring Ring Ring Ring Ring
Code Gear Code Gear Code Gear Code Gear Code Gear Code Gear

8AH 7.50 8AJ 7.50 8AY 7.50 8AB 7.50 8AC 7.50
5TF 7.625
*8BH 7.50 *8BJ 7.50 *8BY 7.50 *8BB 7.50 *8BC 7.50
*5TH 7.625
8AZ 7.50 8AX 7.50 8AV 7.50
*8BZ 7.50 *8BX 7.50 *8BV 7.50

1985 AXLE IDENTIFICATION CODES "B" SERIES
(*INDICATES POSITRACTION)


2.41 Ratio 2.56 Ratio 2.73 Ratio 2.83 Ratio

Ring Ring Ring Ring
Code Gear Code Gear Code Gear Code Gear

8GL 7.50 8GM 7.50 8GN 7.50 8GP 7.50
8FN 7.50 *8NP 8.50 *8NV 8.50 *8NW 8.50
*8NU 8.50 *8YP 8.50 *8YQ 8.50
*8DU 8.50 8YB 8.50 8YC 8.50
*8YX 8.50
*8YK 8.50


3.08 Ratio 3.23 Ratio

Ring Ring
Code Gear Code Gear

8LG 8.50 BLH 8.50
*8NX 8.50 *8NY 8.50
8ZE 8.50 8YE 8.50
*8ZV 8.50 *8YS 8.50
8YD 8.50
*8YR 8.50