CHEVROLET i i l l CH EVRO LET MODEL REFERENCE 1 1977 ROCHESTER 1BC Follow procedure outlined below to determine carburetor andlor part number i 1 Determine vehicle model 2 Determine engine and carburetor type l 3 Part number can be determined by cross referencing 1 corresponding column with same column number on chart I PRODUCTION USAGE COL NO 17057013 All w M T 250 exc C60 12 17057014 All wIA T 250 exc C60 Federal 13 l 17057016 All w A T 250 Alt 14 i 17057015 All wIM T A C C60 250 17 17057020 All wIA T A C C60 250 Federal 18 l 17057018 AD 29 80 wIA T A C C60 250 15 17057314 A B X w A T 250 exc C60 Calif 16 17057318 B X wIA T A C C60 250 Calif 19 I 17057310 F wIA T 250 exc C60 Calif 20 l 17057312 F wIA T A C C60 250 21 17057031 T wlM T 1 4 1 3 17057030 T wIA T 1 4 2 j 17057032 T wlA T A C C60 1 6 Federal 3 17057034 T w A T 1 6 exc C60 Federal 4 17057035 T wlM T 1 6 Federal 5 17057042 T wIA T A C C60 1 6 Alt 9 17057044 T wIA T 1 6 exc C60 Alt 10 17057045 T wlM T 1 6 Alt 11 17057332 T w A T A C C60 1 6 Calif 6 17057334 T wIA T 1 6 exc C60 Calif 7 17057335 T w M T 1 6 Calif 8 l A l GM PARTS DIVISION GENERAL MOTORS CORPORAT 0N CI EVROLET 1O REV 9 78 2 as c 3 000 GROUP