FUEL EXHAUST CARBURETION CHEVROLET MODEL REFERENCE 1984 ROCHESTER 2 BC 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 17084632 12 F 2 8 1 W A T CLOSED LOOP 1 17084633 12 F 2 8 1 W M T CLOSED LOOP 2 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVR LET 17F REV 6 88 CARB 2BBL ROCH 13 3 725 GROUP