0159 CHEVROLET I MODEL REFERENCE I 1978 ROCHESTER 4BC Follow procedure outlined below to determine carburetor and or part number I 1 Determine vehicle model check VIN DIVISION CODE I I 2 Determine engine and carburetor type I I 3 Part number can be determined by cross referencing I I I corresponding column number with same column number on chart I I VIN I PRODUCTION DIV CODE USAGE COL NO 17058202 1 A80 350L w A T Fed exc A C 1 I 17058204 1 A80 350L wIA T A C Fed 2 I I 17058502 1 A80 B 350L wIA T Calif exc A C 6 17058504 1 A80 B 350L wIA T A C Calif 5 17058582 1 B F X Y 350 w A T Alt exc A C 3 17058584 1 B F X Y 350 wIA T A C Alt 4 I I I 17058203 1 A80 350L w M T 7 I 17058202 1 B F Y 350L wIA T Fed exc A C Spl Hi Perf 1 I 17058204 1 B F Y 350L w A T A C Fed exc Spl Hi Perf 2 I I 17058203 1 F 350L w M T exc A C I 7 17058502 1 F 350L w A T Calif exc A C 6 I 17058504 1 F I350L w A T A C Calif 5 I 17058502 1 Z 350L w Calif exc A C 6 I 17058504 1 X 350L wIA C Caiif I 5 I I 17058203 1 Y 350 w M T M20 7 I 17058210 1 Y 350 w A T SI Hi Perf 12 17058211 1 Y 350 w M T Spl Hi Perf exc A C 10 I 17058228 1 Y 350 w A T A C Sp Hi Perf 11 I 17058502 1 Y 350 w A T Calif exc A C 6 I I 17058504 1 Y 350 w A C Calif A T 5 I I I GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 10 REV 9 80 ems c 3 000 GROUP