l V I I I I l c0nvETTE I MODEL REFERENCE 1978 ROCHESTER 4BC I I Follow procedure outlined below to determine 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 l corresponding column number with same column number on chart N VIN PRODUCTION DIV CODE USAGE COL NO I 17058582 1 B F X Y 350 wIA T Alt exc A C 3 I I 17058584 1 B F X Y 350 wIA T A C Alt 4 17058202 1 B F Y 305L w A T Fed exc A C Spl Hi Perf 1 17058204 1 B F Y 350L w A T A C Fed exc Spl Hi Perf 2 17058204 1 B F Y 350L w A T A C Fed exc Spl Hi Perf ist Design 2 17058203 1 Y 350 wIM T M20 7 I 17058210 1 Y 350 wIA T Spl Hi Perf 10 17058211 1 Y 350 w M T Spl Hl Perf exc A C 8 17058228 1 Y 350 w A T A C Spl Hi Perf 9 17058502 1 Y 350 w A T Calif exc A C 6 17058504 1 Y 350 w A C Calif A T 5 17058206 1 Y 350 wIA T A C Fed exc Spl Hi Perf 2nd Design 11 l l I I I GII I PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET I4 REV 9 79 3 1 c 3 000 GROUP