B20 1978 BU CK TRANSIVIISS ON IDENTIFICATION NOTE Transmission Identification can be Located in One of Three Positions on the Transmission A Identification Plate on Side of Case I I I B Stamping Number on Governor Cover I C Ink Stamped on Bell Housing I I V I I lvi I I I I I A SERIES ASSEMBLY CODES I II I I I I I I II 1 I I M15 3SPD MAN M20 e4ISPD MANQ V IV M29 3SPD AT I II I I RZ S3 CR CO I V M33 3 SPD AT KD I KJ I II I KE JD JC V I I I I I B SERIESIASSEMBLY CODES I I II I II I I M29 3 SPD AT M33 3 SPD AT M40 3 SPD AT V I a BAI BZ I 4 KE I It KH I BBI V pI IBC I VI VI OS II I I PZ KJ ILA I V OB I QD I W LC LE I I V LH JC JD MD i ME LD I MC LK C SERIES ASSEMBLY CODES I I M40 3 SPD AT I I BB BC OB OD H SERIES ASSEMBLY CODES M20 4SPD MAN M75 5SPD MAN M33 3 SPD AT ZR UZ U6 KA KL T SERIES ASSEMBLY CODES I M20 4 SPD MAN M29 3 SPQ A T BFI I I T X SERIES ASSEMBLY CODES 1 I I I MI5 3 SPD MAN M33 e 3 SPD AT I RZ RU KC JC I I JD M38 3 SPD AT I I I I M29 TH200 I I AG AJ j I I I I f IV V M38 TH350 TH375 I WZ I I I I M40 TH400 WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION BUlCK 41 I 34