C19 1978 CHEVROLET 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 MIBA3 SPD MAN MZOA4 SPD MAN M29A3 SPD AT RZ S3 S4 BZ CS CD M33 A 3 SPD AT M38 A 3 SPD AT KE AJ AN AG TE B SERIES ASSEMBLY CODES M29 A 3 SPD AT M33 A 3 SPD AT M38 A 3 SPD AT CO CY KE AG AJ AN WK F SERIES ASSEMBLY CODES MI5 A 3 SPD MAN M20 A 4 SPD MAN M38 A 3 SPD AT UR ZNI AG WB AJ WK AN l I2 4 SPD MAN T ZU H SERIES ASSEMBLY CODES M20 A 4 SPD MAN M75 A 5 SPD MAN M29 3 SPD AT U2 U3 RK RJ CA U5 U7 M33 A 3 SPD AT M38 A 3 SPD AT KK KL WC X SERIES ASSEMBLY CODES MI5 A 3 SPD MAN M20 4 SPD MAN M38 A 3 SPD AT UR ZM AG WZ AH WL AJ T SERIES ASSEMBLY CODES MYI A 4 SPD MAN MD3 A 3 SPD AT DB UA ND AWAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORAT ON CHEVROLETAI0A 34