i x CHEVROLET I MODEL REFERENCE V 1977 ROCHESTER 4BC Follow procedure outlined below to determine carburetor and or part number i 1 Determine vehicle model 2 Determine engine and carburetor type 3 Part number can be determined by cross referencing corresponding column with same column number on chart i PRODUCTION USAGE COL NO 17057202 All wIA T 350L exc C60 Federal 2 17057204 All wIA T wIC60 350L Federal 3 17057502 All wIA T 350L exc C60 Calif 4 17057504 All wIA T wIC60 350L Calif 5 17057582 All wIA T 350L exc C60 Alt 6 17057584 All w A T wIC60 350L Alt 7 17057203 F X wIM T 350L 1 i l V l i i l l i i i V GM PARTS DIVISION GENERAL MOTORS CORPORAT ON CHEVROLET O REV 9 78 2 s1 0 3 000 GROUP