FUEL EXHAUST CARBURETION CHEVROLET MODEL REFERENCE 1985 ROCHESTER 4 BC EXPORT CANADA FOLLOW PROCEDURE OUTLINED BELOW T0 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 17085581 12 7 F 305H W M T M39 NM5 EXPORT CANADA EXC A C 1 17085583 12 7 F 305H W M T M39 A C NM5 EXPORT CANADA 2 17085582 12 7 F 305H W A T MD8 A C NM5 EXPORT CANADA 3 17085580 12 7 F 305H W A T MD8 NM5 EXPORT CANADA EXC A C 4 j 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVROLET 17F RIEV 6 88 CARB 4BBL ROCH 33 3 725 GROUP