1 l l C110 i l CHEVROLET l ci izvnousr l MODEL REFERENCE l 1977 HOLLEY 2BC Follow procedure outlined below to determine carburetor andlor 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 l PRODUCTION USAGE COL NO l 458102 H w A T w A C C60 140 Federal 4 458103 H wIM T w A C C60 140 Federal 2 458104 H wIA T 140 exc C60 Federal 3 l r 458105 H wIM T 140 exc C60 Federal 1 458106 H wIA T A C C60 140 Calif 8 458107 H w M T A C C60 140 Alt or Calif 8 458108 H wIA T 140 exc C60 Calif 7 458109 H wIM T 140 exc C60 Alt or Calif 5 458110 H w A T A C C60 140 10 V 458112 H w A T 140 exc C60 Alt 9 l l l 2 l l l l l l GM PARTS DIVISION GENERAL MOTORS CORPOFlATlON CHEVROLET 1O REV Q 80 us c 3 000 GROUP