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 1985 MD9 3 SPD A T MV9 3 SPD A I M57 4 SPD A T THM125C THM2OOC I THM3254L CE 2 53 RATIO BH HH HL BJ OE OK OQ CT 2 84 RATIO CX 3 18 RATIO HS 2 84 RATIO PD 2 84 RATIO PW W 2 39 RATIO MWQ 4 SPD A T W OVRDRIVE THM2004R M19 4 SPD MAN MX6 4 SPD MAN BQ HG OJ OM ZNM 3 32 RATIO ZUB 3 65 RATIO HE OG MY8 4 SPD MAN ZNR 3 32 RATIO 1986 MW9 4 SPD A T W OVERDRIVE MV9 3 SPD A T THM2004R THMZOOC GHG GKC GKJ 6BY GBH GHH 6HL GBR 1987 MW9 4 SPD A T W OVERDRIVE MV9 3 SPD A T THM2004R THMZOOC 7HFF 7KCF 7KJF 7BRF 7BHB 7HHB 7HLB 7KBB 7HTF 7KTF 7HDF 1988 MW9 4 SPD A T W OVERDRIVE MD8 4 SPD A T THM2004R NO CODES AVAILABLE 8KJF 8KTF 1991 GENERAL MOTORS SERVICE PARTS OF EERAT ONS BUICK 44V f 6 91 4 7 4 000