I A CHEVROLET I MODEL REFERENCE I 1978 ROCHESTER 2BC Follow procedure outlined below to detarmine carburetor and or part number 1 Determine vehicle model check VIN DIVISION 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 N0 17058185 1 All exc B 231A w AT Fed 2nd Design 24 17058108 1 A 305U w A T Fed exc A C 7 17058110 1 A 305U wIA T A C Fed 8 3 17058126 1 A19 27 37 305U wIA T Alt exc A C 11 I 17058128 1 A 200 w A T exc A C Calif 12 I 17058130 1 A 200 w A T M2 A C exc Calif 9 17058132 I A 200 wIA T M29 A C exc Calif 10 17058133 1 A 200 w M T A C 3 17058408 1 A 305U wIA T Calif exc A C 6 17058408 1 A 305U wIA T Calif exc A C 6 l N 17058448 1 A G 231A wIA T Calif 16 17058131 1 A 200 w M T exc A C 13 I 17058143 1 All 196 wIM T 4 I 17058145 1 All 231A w M T Fed 7 15 I 17058147 1 All 231A w A T Alt 14 17058108 1 B 305U exc A C Calif 7 17058110 1 B 305U w A C exc Calif 8 17058408 1 B X 305U w Calif exc A C 6 17058112 1 F 305U w A T exc A C Calif 1 17058114 1 F 305U w A T A C exc Calif 2 17058141 1 H 231A wIM T Alt 18 I 17058144 1 H 196 wIA T 5 17058447 1 H 231A w M T Calif 17 17058448 1 H 231A wIA T Calif 16 17058102 1 H 305U wIA T Alt exc A C 19 17058103 1 H 305U w A T A C Alt 23 l 17058104 1 H 305U w A T Fed exc A C 20 17058105 1 H 305U w A T A C Fed 21 17058107 1 H 305U w M T M20 22 17058108 1 X 305U w A T exc A C Calif 7 17058110 1 X 305U wIA T A C exc Calif 8 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 10 i REV 9 78 1 sv c 3 000 GROUP