ENGINE ASSEMBLY CODES IDENTIFICATION CONT D 1990 4 3 262 LB4 5 0 305 LO3 5 7 350 LO5 VIN Z VIN E VIN 7 UUD UUF UUH BLA BLB CLL CLM BMA 5 0 307 LV2 VIN Y UAA UAB 1991 GENERAL MOTORS SERVICE PARTS OPERAT1ONS CHEVROLET 17W 0 000 0 6 6 91