B90 I E EW fw I BUICK BUICK MODEL REFERENCE 1977 ROCHESTER 2BC Follow procedure outlined below to determine carburetor and or part number 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 PRODUCTION USAGE COL NO 17057145 All w I I T 231C Federal 7 17057140 All 350 2 17057146 All w A T w A C 231 exc H Federal 3 17057148 All w A T 231 exc H and A C Federal 4 17057172 All w A T 301 1st design 12 17057176 All w A T 301 2nd design 22 17057141 A w econ pkg 231C 15 17057448 A H w A T 231C Calif 1 17057143 A H w A T 231C Alt 9 17057182 A H w A T 231C Federal 19 17057445 A X w M T 231C Calif 8 17057108 A X 305U exc C60 1st design 13 17057110 A X w A C 305U 1st design 14 17057188 A X 305U exc C60 2nd design 16 17057190 A X w A C 305U 2nd design 17 17058148 B 231A exc A C econ pkg 20 17058149 B w A C 231A exc econ pkg 21 17057143 B X w A T 231 exc A C econ pkg Alt 9 17057144 B X w A T w A C 231C exc econ pkg Alt 10 17057446 B X w A T w A C 231C exc econ pkg Calif 11 17057448 B X w A T 231C exc A C econ pkQ Calif 1 17057147 B X w A C econ pkg 231C 5 17057141 B X w econ pkg 231C exc A C 15 17057180 B X w A T A C 231C exc econ pkg Federal 18 17057182 B X w A T 231C exc A C econ pkg Federal 19 17057447 H w lVl T 231C Alt Calif 6 17057148 H w A T 231 Federal 4 WAREHOUSING AND lsTnlBuTl0N mvlslom OF GENERAL morons CORPORATl0N BUlCK 41 REV 5 81 3 23 c 3 000 GROUP