TRANSMISSION IDENTIFICATION INCLUDING AXLE RATIO TRANSMISSION TO ASSEMBLY CODES U NOTE Transmission identification can be located in one of three positions on the transmission A IdentiFication plate on side of case B Stamping number on governor cover C Ink stamped on bell housing 1982 MD9 3 SPD A T THM125C BF 2 97 RATIO BL 2 53 RATIO CL 2 84 RATIO HS 2 84 RATIO HW 2 39 RATIO PI 2 84 RATIO PL 2 39 RATIO H6 2 39 RATIO OP 2 39 RATIO PD 2 84 RATIO PW 2 39 RATIO 1983 MD9 3 SPD A T THM125C CL 2 84 RATIO CT 3 06 RATIO PW 2 39 RATIO HS 2 85 RATIO HW 2 39 RATIO 1984 MD9 3 SPD A T ME9 4 SPD A T M19 4 SPD MAN THM125C THM44OT4 CC 3 33 RATIO CW 3 06 RATIO UF 3 65 RATIO CK 2 84 RATIO UN 2 66 RATIO CL 2 84 RATIO UR 2 66 RATIO HS 2 84 RATIO OP 2 39 RATIO PD 2 84 RATIO PW 2 39 RATIO CT 3 33 RATIO FRONT AXLE IDENTIFICATION 2 39 RATIO 2 66 RATIO 2 84 RATIO OP PW UN UR CK CL HS PD 3 33 RATIO 3 06 RATIO 3 65 RATIO CC CT CW UF 1991 GENERALMOTORSSERVWEPARTSOPERAUONS CHEVROLET 17A 4 000 4 4 5 91