MODEL REFERENCE 1980 ROCHESTER 4BC I Follow procedure outlined below to determine carburetor and or part number I 1 Determine vehicle model check VIN DIVISION CODE 2 Determine engine and carburetor type I 3 Part number can be determined by cross referencing I corresponding column number with same column number on charts I VIN PRODUCTION DIV CODE USAGE OOL NO 17080204 1 Y 350 wIA T MV4 Exc SP HIPER 1 17080207 1 Y 350 w M T Exc SP HIPER 2 17080228 1 Y 350 w SP H PER A T MV4 3 17080504 1 Y 305H 4 I I cM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 14 REV 5 80 1 21 c r 3 000 GROUP