FUEL EXHAUST CARBURETION Parts in all columns same except where indicated B98 BUICK 1977 ROCHESTER 2 BC Continued See Model Reference for Application GROUP DESCRIPTION OTY 18 4 19 20 FLOAT BOWL PARTS BM BN BS 3 734 INSERT Float Bowl 1 7037286 3 734 INSERT Main Well 1 NS NS NS 3 734 FLOAT BOWL ASM 1 17055376 170553761 17055558 3 766 FAST IDLE CAM 1 17053760 17053760 17059874 I I 3 786 VENTURI CLUSTER ASM 1 17057933 17057933 17059866 3 790 SCREW Venturi CIuster Ctr 1 7009077 3 790 SCREW Venturi Cluster 0tr 1 7045762 3 792 JET Standard 1 7002654 7002654 7ggg551 3 792 JET Primary 2 NS NS NS 3 806 METERING ROD Primaiv 2 NS NS NS 3 806 INSERT Aneriod Cavity 1 NS NS NS 3 810 SPRING Metering Rod Primary 1 NS NS NS 3 814 PULL CLIP Float Needle 1 NS NS NS 3 825 GUIDE Pump Discharge 1 7000286 3 825 BALL Pump Discharge 1 7002117 3 825 RETAINER Pump Discharge Ball 1 NS NS NS 3 825 SPRING Pump Discharge 1 7002118 3 826 BALL Pump Inlet Check 1 17050240 3 838 PUMP ASM 1 17058976 3 841 SPRING Pump Return 1 17050241 3 858 POWER PISTON ASM 1 7009054 3 858 POWER VALVE ASM 1 17053647 17053647 17059870 3 858 AUX POWER VALVE ASM 1 17051201 17051201 17050246 3 858 SPRING Power Piston Primary 1 NS NS NS THROTTLE BODY PARTS I 3 726 GASKET Flange 1 1248832 1248832 1257135 3 729 THROTTLE BODY ASM 1 17055168 17055168 17055563 3 741 SCREW Throttle Body 3 7015105 3 766 SCREW Idle Stop 1 7029427 3 766 SPRING Idle Stop Screw 1 7029428 I 3 766 LEVER Cam Follower 1 NS NS NS 3 766 SPRING Cam Lever 1 NS NS NS 3 766 SPRING Fast Idle Screw 1 NS NS NS 3 766 SCREW Fast Idle Adj 1 NS NS NS 3 766 FAST IDLE LEVER 1 NS NS NS 3 767 SCREW Fast Idle 1 7036222 3 822 IDLE NEEDLE 2 17050301 17050301 17057983 3 823 SPRING Idle Needle 2 7011479 3 838 CLIP Pump Rod 1 7018186 3 843 PUMP ROD 1 7038799 ACCESSORIES 3 726 GASKET Carb Adapter to Intake Manifold 1 3 726 ADAPTER Carb to Intake Manifold 1 3 750 PIPE Choke Air 1 3 750 PIPE Choke Heat 1 3 755 VALVE Carb Vac Brake Therm Vac 1 WAREHOUSING AND DISTRIBUTION DIVISION OF GENERAL MOTORS CORPORAT ON BU CK 41 I REV 5 81 3 31 c 3 000 GROUP