C19 1978 CHEVROLET TRANSMISSION IDENTIFICATION NOTE Transmission Identification can be Located in One of Three Positlons 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 MI5 3 SPD MAN M20 4 SPD MAN M29 3 SPD AT RZ 3 S4 BZ CS CD M33 3 SPD AT V M38 3 SPD AT KE AJ AN AG TE B SERIES ASSEMBLY CODES M29 3 SPD AT M33 3 SPD AT MSS 3 SPD AT CO CV KE AG AJ AN WK F SERIES ASSEMBLY CODES MI 5 3 SPD MAN M20 4 SPD MAN M3S 3 SPD AT UR ZM AG WB AJ wK AN M2I 4 SPD MAN ZU H SERIES ASSFJVIBLY CODES M20 4 SPD MAN M75 5 SPD MAN M29 3 SPD AT UZ U3 RK RJ CA U6 U7 M33 3 SPD AT M38 3 SPD AT KK KL WC X SERIES ASSEMBLY CODES MI5 3 SPD MAN M20 4 SPD MAN MES 3 SFD AT UR ZM AG WZ AH WI A J T SERIES ASSEMBLY CODES MYI 4 SPD MAN MD3 3 SPD AT DB UA ND GM PARTS DIV SlON GENERAL MOTORS CORPORATION CHEVROLET 10 34