BUICK MODEL REFERENCE 1981 ROCHESTER 4BC EXPORT Follow procedure outlined below to determine carburetor and or part number 1 Determine vehicle model check VIN DIVISIONAL CODE 2 Determine engine and carburetor type 3 Part number can be determined by cross referencing corresponding column number with same column number on charts VIN PRODUCTION DIV CODE USAGE COL NO 17081286 34 7 B 307 Exc A C w NM6 Export Canada 1 17081287 34 7 B C 307 w A C NM6 Export Canada 2 17081282 234 7 A 305H Exc A C w NM6 Export Canada 3 17081283 234 7 A 305H w A C NM6 Export Canada 4 17081295 4 7 E 231 3 w NM4 Export Canada 5 VIN PRODUCTION DIV CODE USAGE COL NO 17080260 34 E 307 w NM4 For breakdown see Export Canada 1980 chart pg 3 150C I col 14 17080241 4 7 B 350X w NM6 I For breakdown see Export Canada 1980 chart pg 3 148C col 6 17080249 4 7 B 350X W ALC NM6 For breakdown see Export Canada 1980 chart pg 3 148C col 7 17080249 4 7 C 350X w NM6 For breakdown see Export Canada 1980 chart pg 3 148C I col 7 WAREHOUSING AND DISTRIBUTION Division OF GENERAL MOTORS CORPORATlON BUICK 41 REV 5 81 3 179 c 3 000 GROUP