I V54 I 1980 ROCHESTER 4BC Follow procedure outlined below to determine carburetor andfor part number 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 I corresponding column number with same column number on charts VIN PRODUCTION DIV CODE USAGE COL NO 17080204 1 Y 350 w A T MV4 Exc SP HIPER I 1 17080207 1 Y 350 wil l T Exc SR H PER 2 17080228 1 Y 350 w SP H PER A T MV4 3 17080 7 1 1 Y 305H 4 17080517 1 Y 305H I 5 T wAREI IOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS COFlPORAT ON CHEVROLET 14A R V 12 83 I 3 21 O 3 000 GROUP G 1 1