FUEL EXH AUST CARBURETION CHEVROLET MODEL REFERENCE 1987 ROCHESTER 4 BC FOLLOW PROCEDURE OUTLINED BELOW TO DETERMINE CARBURETOR AND OR PART NUMBER 1 DETERMINE VEHICLE MODEEL 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 17087130 12 F 305H W A T MD8 FED CALIF 1ST DES 1 1 7087131 12 F 305H W M T FED CALIF 2 17087306 12 F 305H W A T MD8 FED CALIF 2ND DES 3 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS CHEVF OLET 17F REV 6 88 CARB 4BBL ROCH 23 3 725 GROUP