LIGHT TRUCK MODEL REFERENCE 1986 ROCHESTER 4 BC 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 17085526 CT G1 2 305F W A C 1 17085524 CT G1 2 305F EXC A C 2 17086048 CT G1 4 3N W A T ALT EXC P S A C 3 17086045 CT G1 4 3N W M T FED EXC P S A C 4 17086053 CT G1 4 3N W M T ALT EXC P S A C 5 17086044 CT G1 4 3N W A T FED EXC P S A C 6 17086047 CT G2 4 3N W M T FED 7 17086047 CT G1 4 3N W M T FED A C EXC P S 7 17086047 CT G1 4 3N W M T FED P S 7 17085506 CT G2 3 350L W CALIF EXC A C 8 17085508 CT G2 3 350L W CALIF A C 9 17085231 CT G1 2 305H W M T ALT 10 17085238 CT G1 2 305H W M T FED A C 11 17085227 CT G1 2 305H W A T FED EXC A C 12 17085239 CT G1 2 305H W M T FED EXC A C A 13 17085206 CT G1 2 3 350L W ALT 14 17085226 CT G1 2 305H W A T A C FED 15 17086046 CT G2 3 4 3N W A T FED 16 17086046 CT G1 4 3N W A T FED P S 16 17086046 CT G1 4 3N W A T FED A C EXC P S 16 17086054 CT G2 3 4 3N W A T ALT 17 17086054 CT G1 4 3N W A T ALT P S 17 17086055 CT G2 4 3N W M T ALT 18 17086055 CT G1 4 3N W M T ALT A C EXC P S 18 17086055 CT G1 4 3N W M T ALT P S 18 17086057 CT G1 2 4 3N W A T MD8 M40 CALIF 19 17086058 CT G1 2 4 3N W M T CALIF 20 17085213 CT G3 350M W A T FED 21 17085215 CT G1 2 305H W A T MD8 MV4 ALT 22 17085298 CT G3 350L W FED A C 23 17085294 CT G3 350L W FED EXC A C 24 17085228 CT G1 2 350L W A T MD8 FED A C 25 17085229 CT G1 2 350L W A T MD8 FED EXC A C 26 17085001 CT 7 G3 350M W NM5 EXPORT CANADA 27 17085001 CT G3 350M W CALIF NB2 27 NOTE 001 ON CARBURETORS WHERE THE GASKET KIT IS NOT SERVICED ORDER POWER CARB KIT NOTE 002 ON CARBS WHERE THE AIR HORN OR FLOAT BOWL IS NOT SERVICE ORDER THE SERVICE CARB 1991 GENERAL MOTORS SERVICE PARTS OPERATIONS LT TRUCK 52G i 3 725 3 94 1 91