CORVETTE ENGINE SERIES NUMBER AND SUFFIX CHART Cont V11 1975 I 1977 350 CID 350 CID CLM CHC CKZ CLD CLR CI IR CLA CLF CLS CKC CLB CKW CLC CKX I CHD CLS CKD 1978 350L CID L4B OFT 35OH CID LB2 OPT I VIN I VIN H CnliI CLR M T I CMR AI 4 CLS A T A CMS A T w Fc CUT M T CI W CLM 1979 f 350 8 CID L48 OFT 350 6 CID I 82 OPT VIN B ly VIN 4 M T ZAA M T ZBA A T w Fed ZAB A r ZBB Calif ZAC Alt 4 ZAD r 1980 1981 305 H LG4 A T ZCA 350 6 LB M T Fed ZDA 350 B LAB M T ZAM 350 6 L81 A I Calif ZDB 350 8 L4B A T MK 350 6 LB1 M T Calif I ZDC 350 6 L82 M T ZBD 350 E LE1 A T Fed ZDD 350 E L82 AT ZBC 1982 350 8 L83 w L Fed ZBA 350 8 LB3 wlA T Calif ZBC 350 8 ILB3 wICaliI ZFN 1978 TRANSMISSION IDENTIFICATION CODES M20 4 SPD MAN 1 4 SPD MAN ZU S6 ZW M38 3 SFD AT 5WB STL 1979 TRANSMISSION IDENTIFICATION CODES M20 4 SPD MAN M21 4SPD MAN UH UK Warner WARNER I M38 3 SPD A T M TB WB 0 WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORATION CHEVROLET I4A REV 12 83 15 A I 6