I C145 I I CHEVROLET MODEL REFERENCE 1978 ROCHESTER 2BC I Follow procedure outlined below to determine carburetor andlor part number I I 1 Determine vehicle model check VIN DIVISION CODE I I Z Determine engine and carburetor type I 3 Part number can be determined by cross referencing I corresponding column number with same column I I number on charts I I I 1 vnu I I PRODUCTION DIV CODE USAGE COL N0 I I 17058185 1 All exc B 231A w A T Fed 2nd Design 24 17058108 1 A 305U wIA T Fed exc A C 7 I 17058110 1 A 305U w A T A C Fed 8 I I 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 I 17058130 1 A 200 w AT M29 A C exc Calif 9 I 17058132 1 A 200 w AT M29 A C exc Calif 10 I 17058133 1 A 200 wlM T A C 3 I 17058408 1 A 305U wIA T Calif exc A C 6 I I 17058448 1 A G 231A wIA T Calif 16 I 17058131 1 A 200 w M T exc A C 13 17058143 1 All 196 wIM T 4 I 17058145 1 All 231A wlM T Fed 15 I 17058147 1 All 231A wlA T Alt 14 I I 17058108 1 B 305U exc A C Calif 7 I 17058110 1 i B 305U wIA C exc Calif L 8 I 17058408 1 B X 305U wICaIif exc A C 6 I 17058112 1 F 305U wIA T exc A C Calif I 1 I 17058114 1 F 305U w A T A C exc Calif 2 I 17058141 1 H 231A wlM T Alt I 18 I I 17058144 1 I H 196 w A T 5 17058447 1 H 231A w M T Calif 17 I 17058448 1 H 231A wIA T Calif 16 I 17058102 1 H 305U w AT Alt exc A C 19 17058103 1 H 805U wIA T A C Alt 23 I I 17058104 1 H 305U wIA T Fed exc A C 20 I 17058105 1 H 305U w A T A C Fed 21 I 17058107 1 H 305U wlM T M20 22 I I 17058108 1 X 305U w A T exc A C Calif 7 I I 17058110 1 X 305U wIA T A C exc Calif 8 17058176 1 A19 27 37 305U wIA T Alt exc A C 2nd Design 25 I 17058178 1 A19 27 87 305U wIA T Alt A C 2nd Design 26 I 17058181 1 231A wlM T Fed 2nd Design 27 17058145 1 231A wIM T Fed 1st Design 28 17058410 1 A 305U wIA T Calif A C 29 GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 10 REV 9 80 a e1 c 3 000 GROUP