1978 CHEVROLET ENGINE IDENTIFICATION I A SERIES ASSEMBLY CODES 200 CID L26 OPT Z3 IA CID LD5 OPT 305U CID LG3 OPT I VIN M VIN A VIN U CWA DH OK CRW CRV CWB EA CRX CRZ CRH CPZ MD CER DAF 350L CID LM OPT I N L CMD CMB CMA CMC B SERIES ASSEMBLY CODES 250 CID L22 OPT 305U CID LG3 OPT 350L CID LMI OPT VIN D VIN U VIN L CCK CCH CTL CEK CHH CLT cu ccm cm UAA crm cMT c u DAD DAB crm cur I CHL CUM I CHM CUR CHY CUS CLK L F SERIES ASSEMBLY CODES 250 CID L2Z OPT 305U CID LG3 OPT 350L CID LIVI I OPT VID D VIN U VIN L I CCJ CCH CTH CTK CHF TCHS CCK CEM CHJ TCHT CHL TCHU I CHR TCHC I H SERIES ASSEMBLY CODES I 196 CID LC9 OPT 231A CID LD5 OPT 305U CID LG3 OPT VIN C VIN A VIN U I PC PD OD OC CTA CTD I OF OE CTB CTF CTC I51VC D LX6 OPT vm v I WD ws I WH XL ZFZA ZBZH I N I X SERIES ASSEMBLY CODES I 250 CID L22 OPT 305U CID LG3 OPT 350L CID LMI OPT VIN D V N U VIN L CCJ CCH CTH CTK CUS CHL A I CCK CJR CTJ CPJ CUFI CUM T CJM CFM GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 1D I 21