CORVETTE ENGINE SERIES NUMBER AND SUFFIX CHART Cunt I I 1980 TRANSMISSION IDENTIFICATION CODES MI8 4SPD MAN ZJ M33 3 SPD A T JC BUICK Mvd 3 SPD A T TW CHEV I 1981 TRANSMISSION IDENTIFICATION CODE MIB 4 SPD MAN MX3 3 SPD A T CC BJD 1982 TRANSMISSION IDENTIFICATION CODE I MDB 4 SPD A T YA s wAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATlON CHEVROLET IGA I 18 REV 12 83 A I 7 I