CHEVGMC TRUCK PARTS CATALOGUE HOLLEY 4 BARREL CARBURETORS For 1973 366 Engines with 4BC Type R 6510A For 1973 427 Engines with 4BC Type R 6511A NOTE Where is shown in the part number column refer to the variable parts listing on Page 4 the part number is listed under the applicable carburetor Key Description Part No Qty Key Description Part Ne Qty A Service Carburetor 1 95 Fast Idle Pin 3958063 1 B Maier Repair Kit 702711 1 98 Governor Diaphragm Assy Cover 692271 1 C Minor Repair Kit 702710 1 99 Throttle Operating Shaft Housing Assy 702704 1 D Gasket Kit 702709 1 100 Governor Body Cover 8 Bracket 3916098 1 1 Choke Plate Assembly 3852460 1 102 Main Metering Body 8 Plugs Assy Primary 1 5 Choke Shaft Assembly 2367952 1 103 Main Metering Body 8 Plugs Assy 6 Choke Rod Lever 8 Bushing Assy 2367953 1 Secondary 702702 1 7 Choke Control Lever 8 Swivel Assy 2367974 1 105 Fuel Bowl 8 Plugs Assy Primary 3936298 1 9 Fast Idle Cam Lever 2285775 2 106 Fuel Bowl 8 Plugs Assy Secondary 3966914 1 11 Throttle Stop Screw 650550 1 107 Fuel Pump Cover Assembly 6263029 1 18 Secondary Diaphragm Cover Assy 2285812 4 109 Diaphragm Assy Secondary 3854474 1 19 Fuel Pump Cove Assy Screw 8 Lockwasher 2285779 4 110 Governor Diaphragm Assembly 2367971 1 20 Governor Diaphragm Cover Assy 111 Pump Diaphragm Assembly 2414214 1 Screw 8 Lockwasher 2285812 2 112 Secondary Diaphragm Link Retainer 274611 1 21 Governor Diaphragm Cover Assy 113 Governor Diaphragm Link Retainer DISC 1 Screw 8 Lockwasher 2285812 2 116 Check Valve Ball Retainer or Channel Plug 683354 1 22 Pump Cam Lock Screw 8 Lockwasher 3916077 1 117 Float Retainer 9414805 2 23 Fuel Bowl To Main Body Screw 2367996 8 118 Fast Idle Cam Plunger Spring 2292668 1 24 Diaphragm Lever Adjusting Screw 2367998 1 120 Throttle Stop Screw Spring 2285846 1 25 Throttle Body Screw 8 Lockwasher 2368004 7 122 Governor Spring 2285724 1 26 Secondary Diaphragm Housing Assy 451910 3 123 Diaphragm Spring Secondary 1 28 Diaphragm Lever Assy 8 Driver Assy 124 Diaphragm Return Spring 2367992 1 Screw Lockwasher 271060 1 125 Pump Operating Adjusting Screw Spring 3888872 1 29 Pump Operating Lever Adjusting Screw 3916079 1 126 Float Spring l DISC 2 31 Governor Housing Assy Screw 8 Lockwasher 2368036 3 128 Choke Lever Spring 2367976 1 32 Shaft Housing Assy Screw 8 Lockwasher 2368001 2 132 Choke Control Lever Nut 426915 1 33 Pump Discharge Nozzle Screw 3960391 1 133 Governor Lever Nut 120614 1 34 Fast Idle Adjusting Screw 3933862 1 134 Fuel Valve Seat Adjusting Nut 3852477 2 35 Governor Body Cover Screw 8 Lockwasher 2403593 4 138 Pump Cam 3852480 1 37 Fuel Valve Seat Lock Screw 3852465 2 139 Fast Idle Cam 8 Shaft Assy 2367972 1 38 Main Body 8 Plugs Assy 702500 1 141 Choke Rod 2386310 1 39 Fuel Level Check Plug 3852466 2 142 Governor Lever Nut Lock Washer 120217 1 40 49 Gaskets Part of Kits 144 Choke Control Lever Lock Washer 121841 1 40 Fuel Lever Check Plug Gasket 2294772 2 146 Choke Rod Retainer 2315470 1 42 Fuel Inlet Fitting Gasket 2285838 1 151 Fast Idle Cam Plunger 2292667 1 43 Fuel Valve Seat Gasket or O Ring Seal 2347976 2 152 Filter Screen or Assembly 3852482 1 44 Fuel Bowl Screw Gasket 2367997 8 153 Baffle Plate Right Hand 3912152 1 45 Secondary Diaphragm Housing Gasket 2368005 1 154 Baffle Plate Left Hand 3912154 1 46 Governor Body Gasket 682595 1 1455 Pump Operating Lever 3917723 1 47 Power 8 Control Valve Body Gasket 2367983 1 156 Governor Lever Assembly 2367973 1 48 Throttle Body Gasket 681001 1 157 Diaphragm Lever Assembly 3869001 1 49 Flange Gasket 696287 1 161 Choke Rod 8 Pump Operating Lever Retainer 9431762 1 50 54 Gaskets Part of Kits L 163 Governor Housing 8 Plug Assy 3917951 1 50 Fuel Valve Seat Adjusting Nut Gasket 546616 2 166 Air Vent Valve 3877144 1 51 Fuel Valve Seat Adjusting Lock Screw 167 Throttle Operating Shaft Retainer 3877147 1 Gasket 546615 2 168 Air Vent Rod Spring 3852475 1 52 Fuel Bowl Gasket 702707 2 170 Air Vent Rod 3877150 1 53 Metering Body Gasket 702706 2 4 Spring Redundant Throttle Closing 7t6I97 1 54 Pump Discharge Nozzle Gasket 2394020 2 Kit Redundant Throttle Closing 717662 62 Throttle Body 8 Shaft Assy 702703 1 ss rust Line mms A ABLE PARTS L I 68 Idle Adjusting Needle 6273907 2 69 Float 8 Hinge Assembly 3916087 2 Key 70 rust Inlet vsivs s sasl Assy 690320 2 R 6510A 71 Fuel Inlet Fitting 387714 2 1 72 Pump Operating Lever Fittin or Nut 3917710 1 73 Pump Discharge Nozzle 2367980 1 A 74 Main Jet Primar 2370791 75 Main Jet Secondlary 2 76 Governor By Pass Jet Primary 3933865 1 77 Governor By Pass Jet Secondary 2285722 1 79 Pump Discharge Needle Valve or Check Ball Weight 3852485 1 123 702708 DISC 80 Power Valve Assy Primary 692269 1 82 Governor Cover Wire Seal 2285834 3 83 Governor Cover Safety Wire DISC 3 84 Fuel Line Tube O Ring Seal DISC 2 86 Idle Needle Seal 2367987 2 87 Governor Body Seal 2368023 1 88 Choke Rod Seal 3852471 1 93 Governor Spring Pin Long 2285808 1 NOTE Parts Found on illustration but not on variable parts list are not applicable to the subject carburetors or are not serviced GROUP 3 725 HOLLEY CARBURETOR CHART 11 1