FUEL EXHAUST CARBURETION LIGHT TRUCK MODEL IREFERENCE 1 985 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 17085220 CT C1 03 305H W M T FED EXC A C 1 17085221 CT C1 03 305H W M T FED A C 2 17085223 CT C1 2 4 3N W M T ALT EXC P S A C 3 17085222 CT C1 2 4 3N W A T ALT EXC P S A C 4 17085208 CT C1 2 4 3N W A T FED EXC P S A C 5 17085209 CT C1 2 4 3N W M T FED EXC P S A C 6 17085526 CT C1 305F W A C 7 17085524 CT C1 305F EXC A C 8 17085211 CT C1 2 4 3N W M T FED A C EXC P S 9 17085211 CT C1 2 4 3N W M T FED P S 9 17085211 CT K1 4 3N W M T FED 9 17082213 CT CK2 350M W A T FED H D EMIS CONT H4D 10 17085292 CT CK1 K2 350L W A T MD8 FED A C 11 17085290 CT CK1 K2 350L W A T MD8 FED EXC A C 12 17085230 CT C1 2 K1 305H W A T MD8 ALT 13 17085004 CT CK2 3 454W W M T M20 FED EMIS CONT H5D 14 17085502 CT CK1 4 3N W A T MD8 CALIF 15 17085503 CT CK1 4 3N W M T CALIF 16 17085224 CT C1 2 4 3N W A T ALT A C EXC P S 17 17085224 CT C1 2 4 3N W A T ALT P S 17 17085224 CT K1 4 3N W A T MD8 ALT 17 17085210 CT C1 2 4 3N W A T FED A C EXC P S 18 17085210 CT C1 2 4 3N W A T FED P S 18 17085210 CT K1 4 3N W A T MD8 FED 18 17085225 CT K1 4 3N W M T ALT 19 17085225 CT C1 2 4 3N W M T ALT A C EXC P S 19 17085225 CT C1 2 4 3N W M T ALT P S 19 17085506 CT CK1 2 350L W CALIF EXC A C 20 17085508 CT CK1 2 350L W CALIF A C 21 17085231 CT C1 2 K1 305H W M T ALT 22 A 17085238 CT 02 K1 305H W M T FED A C 23 17085227 CT C1 2 K1 305H W A T FED EXC A C 24 17085239 CT C2 K1 305H W M T FED EXC A C 25 17085206 CT CK1 2 350L W A T MD8 ALT 26 17085226 CT C1 2 K1 305H W A T A C FED 27 17085001 CT CK2 3 350M W CALIF EMIS CONT H4D 28 17085213 CT CK2 3 350M W A T FED EMIS CONT H5D 29 17085000 CT CK2 3 454W W CALIF EMIS CONT H4D 30 17080213 CT CK2 3 350M W FED 31 17085212 CT CK2 3 454W W A T M40 FED EMIS CONT H5D 32 17085003 CT CK2 3 350M W M T M20 FED EMIS CONT H5D 33 17085235 CT K1 2 350L W M T ALT L 34 17085291 CT K1 2 350L W M T FED EXC A C 35 17085293 CT K1 2 350L W M T FED A C 36 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 1 1988 GENERAL MOTORS SERVICE PARTS OPERATIONS LIGHT TRUCK 52R 1 REV 1 88 CARB 4BBL ROCH 3 3 725