L22 1980 OLDSMOBILE TRANSMISSION IDENTIFICATION 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 A SERIES ASSEMBLY CODES M33 3 Spd A T MV4 3 Spd A T M3 3 Spd A T 7KC 7LC 7WD 7WL 7JE 7LJ 7LD MV9 3 Spd A T M15 3 Spd Man I THM 350 M38 3 Spd A T Z6 7OZ 7CC 7JK 7KH 7OT B SERIES ASSEMBLY CODES M33 3 Spd A T MV4 3 Spd A T 7LA 7TY 7WC 7WA M31 3 Spd A T MV9 3 Spd A T M38 3 Spd A T 7TT 705 7OT 7KH 7OY 7OX 7PG C SERIES ASSEMBLY CODES MV9 3 Spd A T M40 3 Spd A T 7OB 70A E SERIES ASSEMBLY CODES M32 3 Spd A T 7OJ 7OK 7OH H SERIES ASSEMBLY CODES M38 3 Spd A T M20 4 Spd A T M29 3 Spd A T KA SH PB PY X SERIES ASSEMBLY CODES M20 4 Spd MAN M34 3 Spd A T AU 7PZ 2 53R 7CV 2 84R 1987 GENERAL MOTORS SERVICE PARTS OPERATIONS OLDSMOBILE 31 36