TRANSMISSION IDENTIFICATION CONT D TRANSMISSION TO ASSEMBLY CODES 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 1983 MD9 3 SPD A T MW9 4 SPD A T W OVRDRIVE M57 4 SPD A T THM125C THM4004R THM3254L CE CT HD HW BR HE OM OZ BE BJ OE OK CL PD BY OG MX2 3 SPD A T M31 3 SPD A T MV9 3 SPD A T THM35OC THM25OC THM2OOC KA KE WH LJ XD WK XL XH OR KC LB MV4 3 SPD A T THM35OC MY8 4 SPD MAN M19 4 SPD A T CODES NOT AVAILABLE AC DA SC RD BF SB SD M17 4 SPD MAN BD SF 1984 MD9 3 SPD A T THM125C M19 4 SPD MAN M17 4 SPD MAN CE 2 53 RATIO UC 3 32 RATIO UH 3 65 RATIO W CT 3 33 RATIO UF 3 65 RATIO HS 2 84 RATIO PD 2 84 RATIO PW 2 39 RATIO MY8 4 SPD MAN UD 3 32 RATIO FRONT AXLE IDENTIFICATION 2 39 RATION 2 53 RATIO 2 84 RATIO PW CE HS PD 3 32 RATIO 3 33 RATIO 3 65 RATIO UC UD CT UF UH j 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS BUICK 44W 4 000 4 6 6 9 1