FUEL EXHAUST CARBURETION 3 766 Cql Il N5LUNGER SCREW SPACER SPRING Carburetor Fast Idle 55 59 Ser 4 6 w Roch 6 cyl exc A C 60 66 All 6 cyl 67 All w Roch 1BC 7002102 1 SPRING lever 56 57 All w distr cont gov 58 59 Ser 5 w 7012457 3013 57 59 Ser 6 8 cyl exc 4BC 58 59 Ser 9 10 w 7012145 exc 10F l 58 59 Ser 10F w 7011155 59 Ser 7 8 w 7013353 60 62 Ser 60 thru 80 8 cyl exc 4BC 63 65 Ser 60 80 8 cyl 66 Ser 60 80 366 67 69 Ser 50 60 w Roch 2I3C 327 i 366 69 70 Ser 50 w Roch 2BC 71 72 Ser 40 Conv Roch 2BC w A T 540 71 72 Ser 50 w Roch 2BC exc TDM 7003176 1 SPRING stop screw w 7015019 7020025 29 0109 61 13 66 Ser 40 Tilt w gov 307 69 70 Ser 40 w Roch 2BC 350 71 72 Ser 40 Conv w Roclh 2BC exc A T 540 7029428 1 SPRING throttle shaft and lever 3 767 SCREW Carburetor Fast Idle Cam 55 72 All w Roch Carb 7003561 1 attaching No 12 28 x 3 774 NOZZLEE Carburetor 67 72 All w Holley 4BC 2367980 1 3 786 VENTURI Carburetor 71 Ser 40 Conv Roch 2BC w A T 540 71 72 Ser 50 w Roch 2BC exc TDM 7044975 1 w 7041124 7108 72 Ser 40 Conv w Roch 2BC exc A T 540 7045895 1 w 7042123 3 790 SCREW Venturi Cluster 55 Ser 5 6 w 2BC 56 57 All exc 4BC 58 62 Ser 4 w 2BC 58 59 Ser 5 6 w 7012457 3013 58 59 Ser 10F w 7011155 59 Ser 7 8 w 2BC 348 55 69 All w 2BC 71 72 All w Roch 1BC 2BC 7000293 2 V venturi at outer holes No 8 32 x 1 66 67 All w 2BC 366 69 72 All w Roch 2BC 7009077 1 fuel outlet center w 70261 13 7029122 l 23 24 7040123 24 7023 24 66 67 All w 2BC 366 69 71 All w Roch 2BC 7008502 2 fuel outlet otr w 70261 13 7029122 23 l 24 7040123 24 7023 24 3 792 JET Carburetor Metering Rod A NOTE Stamp on top or side denotes orifice diameter in thousands 38 49 Util w 7002539 40 4600 50 51 Util 216 w 7004039 53 Util 216 7002651 1 1 step lean 60 degree approach w 7004600 38 53 Util 1 step rich 56 57 Ser 5 7 8 exc 4BC 56 57 Ser 6 w distr cont gov exc 4BC 58 59 Ser 5 exc 4BC standard 58 Ser 6 8 cyl exc 4BC 1 62 Ser 40 8 cyl 7002652 2 secondary 60 approach stamped 52 w 7011143 2457 3025 I 38 53 Util 216 1 step rich 59 Ser 9 10 exc 10F GM PARTS DIVISION GENERAL MOTORS CORPORATION CHEVROLET 72TM REV 5 79 3 73 3 766 3 792 2 A Wn www