Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Products

Carburetion

Shop Oval Track Air & Fuel Delivery At Speedway Motors

Speedway Motors stocks all the best names in circle track racing carburetors and intake manifolds! Plus, we have a great selection of fuel cells, as well as electric and mechanical fuel pumps. Don't forget to let your engine breath with filters from K&N, R2C and aFe Power. Whether you run alcohol or gas, Speedway can fuel your need for speed!

Featured Products
  • Jet Performance 37001 Rochester Circle Track 2 Barrel Carburetor
    Jet Performance 37001 Rochester Circle Track 2 Barrel Carburetor
    (Part #45537001)
    x
                

    This Jet Performance Products 500 CFM 2GC carb is modified specifically for circle track racing. This Rochester carb complies with the IMCA rules. They are arguably the best OEM production two barrel carburetor for use in circle track racing.

    • .135 needle and seat to ensure adequate fuel and supply
    • Idle, transition, and accelerator pumps are modified
    • 1-11/16" bore, 1-3/8 venturi
    • Uses Holley jets (comes equipped with size #74)
    • 5/8-18" inverted flare fuel inlet
    • 2.008" x 3.695" mount pattern w/ .351" mount holes
    • No choke mechanism
    • Modified cluster to keep fuel curve correct throughout the RPM range
  • Accelerator Pump Spring for 9 Super 7 Carburetors
    Accelerator Pump Spring for 9 Super 7 Carburetors
    (Part #91011546)
    x
                

    Need to replace your original accelerator pump spring on your 9 Super 7 Carburetor? This is the replacement spring that you need. It's important to make sure the spring you are using does not wear out so that your accelerator pump rod functions as it needs to.

    • Replacement accelerator pump spring
    • For 9 Super 7 Carbs
    • Sold Individually
  • Holley 10833-5 Fuel Bowl Gasket
    Holley 10833-5 Fuel Bowl Gasket
    (Part #42710833)
    x
                For Holley double pumper carbs. Package of five gaskets.
            
  • Wissota-Spec 1 Inch 4-Barrel Carburetor Spacer
    New
    Wissota-Spec 1 Inch 4-Barrel Carburetor Spacer
    (Part #1351960)
    x
                

    The Wissota "1960 spacer" is a 1 inch aluminum carburetor spacer that is a quick and easy way to improve the performance of your engine.  Carb spacers lengthen the intake plenum increasing it's volume, and speeding up flow. The Wissota carb spacer works with Holley carburetors with a 5.156" x 5.625" bolt hole pattern.

    • Wissota spec part
    • Carburetor spacer style: 4-Barrel
    • 1 inch thickness
    • Aluminum material
    • Sold individually

     

  • Clear View Sight Plugs
    $4.99
    Product Rating: 3.20 Stars
    Clear View Sight Plugs
    (Part #54565226)
    x
                Allows you to check the fuel level in the float bowl of your Holley carburetor without removing the plug and spilling fuel. Thread is 5/16"-24 and the plug diameter is 0.50".
            
  • Holley 116-3 Center Hung Carburetor Float
    Holley 116-3 Center Hung Carburetor Float
    (Part #4271163)
    x
                These Holley replacement Nitrophyl carburetor floats are for center hung float bowls.
            
  • Carb Inlet Fitting Adapter, -8 AN to 7/8-20
    Carb Inlet Fitting Adapter, -8 AN to 7/8-20
    (Part #6174021)
    x
                

    This -8 AN adapter fitting fits most Holley and all Quadrajet up to 1974 with 7/8"-20 inlet.

    Fitting Thread Application Chart (GIF)

  • Holley Chrome Fast Idle Cam Plate
    Holley Chrome Fast Idle Cam Plate
    (Part #42734506)
    x
                

    Holley offers quality choke service parts for your carburetor.  These fast idle cam plates come in a beautiful chrome finish.

    • Fast idle cam plate
    • Chrome

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"Oval Track, Carburetion" Page 1 of 12

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  • AFCO 10171 Bushing Kit w/ RH Threaded Female Rod End
    AFCO 10171 Bushing Kit w/ RH Threaded Female Rod End
    (Part #10610171)
    x
                AFCO Throttle Rod Components
            
  • Kinsler Fuel Injection 3328 Bypass Valve Spring, 7 Lb.
    Kinsler Fuel Injection 3328 Bypass Valve Spring, 7 Lb.
    (Part #4733328)
    x
                Dial in your bypass valve with these standard bypass springs for use with alcohol carburetors. Spring has a .028" wire diameter.
            
  • Speedway Aluminum Fuel Log for Demon Carburetor
    Speedway Aluminum Fuel Log for Demon Carburetor
    (Part #91011600)
    x
                

    Ensures adequate fuel pressure to carburetor and helps eliminate fuel starvation problems. Fuel pressure is regulated after carburetor has been supplied and not before. Must use return fuel line to take full advantage of benefits.

    Features AN8 inlet and two AN8 outlets.  Threaded 3/4" NPT (plugged) on back that can be used for a return line. Also has 1/8" NPT outlet for fuel pressure gauge, fittings sold separately. 

  • Speedway Holley Mechanical Fuel Pump Fuel Line Kit
    Speedway Holley Mechanical Fuel Pump Fuel Line Kit
    (Part #6174090)
    x
                

    This pump-to-carb fuel line kit will get you the -8 AN hose, hose end fittings and mechanical fuel pump fitting if required. Choose from push-on steel or aluminum fittings with blue hose, or aluminum fittings with stainless steel braided hose. Comes with -8 AN hose only.

    Fitting sizes listed indicate fuel pump outlet fitting size.

    Style Choice Guide:

    • ALU - aluminum fittings with blue hose
    • SS  - aluminum fittings with stainless hose
    • STL - steel fittings with blue hose 
  • Willys Carbs WCD251 2-Barrel Throttle Stop, Return Spring Bracket
    Willys Carbs WCD251 2-Barrel Throttle Stop, Return Spring Bracket
    (Part #80015251)
    x
                
    • Fits 4412 style 2 bbl. carburetors
    • Throttle stop and return spring bracket all in one
  • Fuelab 52501-1 EFI Fuel Pressure Regulator, 25-90 PSI
    Fuelab 52501-1 EFI Fuel Pressure Regulator, 25-90 PSI
    (Part #96052501)
    x
                

    Gasoline, methanol, ethanol, and dieselfuel compatible for fuel injected applications. Accepts port style and non-port style union fittings without interference. Also features two 1/8” NPT gauge ports for an external pressure gauge and pressure reference. Fine thread pitch on adjustment screw for precise pressure adjustment.

    • Includes stainless steel mounting bracket
    • One -6AN inlet and one -6AN return port in-line
  • Moroso 64945 Phenolic Insulating Carb Spacer for Holley 390
    Moroso 64945 Phenolic Insulating Carb Spacer for Holley 390
    (Part #54564945)
    x
                

    Phenolic material is a type of plastic resin which has excellent insulating properties, so it will keep the fuel in your 4 barrel Holley 4150/4160 cooler for more power. For 390 CFM carbs with 1.467" diameter bores.

    • Specially formulated material reduces heat conductivity 10 times greater than aluminum
    • Reduces fuel temperature inside the carburetor
    • Denser, more powerful fuel charge to the manifold
    • 4 hole plenum design
    • 1/2" height
    • Gaskets not included
  • Gaerte Zinc Plated Steel Throttle Stop
    Gaerte Zinc Plated Steel Throttle Stop
    (Part #3911500)
    x
                Earl Gaerte also came up with this slick zinc plated steel throttle stop and return spring bracket. Simple and functional. For most Holley or Demon carbs.
            
  • AFCO 10175-18 Throttle Linkage Rod Kit, 18 Inch
    AFCO 10175-18 Throttle Linkage Rod Kit, 18 Inch
    (Part #1061017518)
    x
                
    Adjustable throttle linkage rod kit includes 1/4" plated steel rod with right hand 1/4" male threads on both ends. Kit also includes carb bushings with 1/4" female rod ends, jam nuts and rod.
    • 1/4" plated steel rod w/ r/h 1/4" male threads on both ends
    • Includes carb bushings, 1/4" female rod ends, jam nuts, & rod
    Note: Extra-long thread allows more adjustment
  • AFCO 10174 Carburetor Bushings, Pair
    $10.99
    $11.99
    Product Rating: 5.00 Stars
    AFCO 10174 Carburetor Bushings, Pair
    (Part #10610174)
    x
                AFCO Throttle Rod Components
            
  • Holley 34-25 Quick Change Primary Float Bowl
    Holley 34-25 Quick Change Primary Float Bowl
    (Part #4253425)
    x
                Update your Holley 4150/4160 carb with quick change float bowls. Includes gaskets and plugs. For center hung float bowl. Also includes jet driver. 

    NOTE: Primary and secondary bowls are not interchangeable!

    425-3425 Instruction Sheet (PDF)

  • Lokar 1010118 Throttle Cable/Spring Return Bracket Kit, 4 Hole, Black
    Lokar 1010118 Throttle Cable/Spring Return Bracket Kit, 4 Hole, Black
    (Part #4911010118)
    x
                

    This black throttle bracket from Lokar is designed for Morse cables and or single cylinder throttle stops. Its design eliminates top mount flopping and can function without throttle stops.

    • Scoop tray studs and stainless hardware included
    • Return Springs with dual wound ends for safety
    • Eliminates single hook ends opening up
    • Creates less strain on throttle cable
    • For 4500 Series Carburetors
    • Made In The U.S.A.
  • Holley Carburetor Gas Needle and Seat, .110 Inch
    Holley Carburetor Gas Needle and Seat, .110 Inch
    (Part #4276504)
    x
                "Viton" needle and seat is resistant to dirt and provides superior seal when closed. Size .110" for gas carbs. Gasket not included.
            
  • Willys Carbs WCD64002 HP Series Gas 4 Barrel Carburetor, 750 Base
    Willys Carbs WCD64002 HP Series Gas 4 Barrel Carburetor, 750 Base
    (Part #80064002)
    x
                The Willy's four barrel carbs feature Holley 750 CFM main bodies, special radius air entry, externally adjustable metering blocks, screw-in air bleeds, black powder coating and Teflon throttle shaft bushings. 355-406 ci.
            
  • Adjustable Holley 2300/Rochester 2G Two Barrel Carb Adapter
    Adjustable Holley 2300/Rochester 2G Two Barrel Carb Adapter
    (Part #91011510)
    x
                

    This set of aluminum intake adapter plates allows you to adapt a Rochester 2G 2 barrel or Holley 2300 series two barrel carburetor onto a 4 barrel intake manifold and adjust it forward or back on manifold. The carb spacer plates feature an open design to increase plenum volume which improves top end performance. When assembled the adapter will measure 1" tall.

    Kit includes carb adapters, gaskets and all necessary hardware.

  • Holley 36-182 4150 Carb Tuning-Calibration Kit
    Holley 36-182 4150 Carb Tuning-Calibration Kit
    (Part #42736182)
    x
                

    This tuning kit contains a selection of main jets, pump nozzles and power valves in popular sizes. All contained in a handy and durable plastic case. Gaskets are included to facilitate carburetor reassembly.

    For gasoline carbs only. Fits Model 4150 "Double Pumper" carburetors.

    • 4 Each - 8 Metering Jet Sizes ranging from #70-84
    • 2 each #35 and # 37 pump nozzles
    • 3 Power Valves sizes 3.5, 4.5 and 5.0
    • 12 Metering Block Gaskets
    • 12 Fuel Bowl Gaskets
    • Misc. Pump Nozzle
    • Misc. Power Valve
    • Misc. Fuel Bowl Screw, pump nozzle and power valve Gaskets
  • Holley 37-1536 Performance Carburetor Renew Rebuild Kit
    Holley 37-1536 Performance Carburetor Renew Rebuild Kit
    (Part #427371536)
    x
                

    Each Holley Renew Kit carburetor rebuild kit contains all parts and gaskets that are necessary to restore “like new” performance to your four barrel carburetor. Detailed instructions are also included to guide you through the rebuilding process. Start off the season with a quality Holley Renew Kit repair kit. It's your guarantee for trouble–free cruising.

    • Serves all Holley Performance Carburetors
    • Genuine Holley quality parts
    • Extra parts for performance tuning
    • Step-by-step instructions
    • Detailed tuning guide
    • Packaging also parts tray
    • Includes:
      • Gaskets
      • O-Rings
      • Pump Diaphragm
      • Needle & Seat
      • Power Valve 
      • Step-By-Step Instructions
      • Detailed Tuning Guide

    427371536 Carb Rebuild Manual (PDF)

    427371536 Carb Exploded View (PDF) 

    427371536 Carb Kit Specifications (PDF) 

    427371536 Carb Addendum (PDF) 

  • Holley 37-485 4150 4 Barrel Carburetor Rebuild Renew Kit
    Holley 37-485 4150 4 Barrel Carburetor Rebuild Renew Kit
    (Part #42737485)
    x
                

    These kits give you the parts required to bring your Holley four barrel carb back to original specifications and "like new" condition. The Renew Kit package includes new gaskets, O-rings, pump diaphragms, needle and seats, power valves, and a detailed instruction sheet to take you step-by-step through the rebuilding process. 

    427-37485 Instructions (PDF)

  • Holley 37-1539 4150 4 Barrel Alcohol Carburetor Rebuild Master Kit
    Holley 37-1539 4150 4 Barrel Alcohol Carburetor Rebuild Master Kit
    (Part #427371539)
    x
                

    Each Holley Renew Kit carburetor rebuild kit contains all parts and gaskets that are necessary to restore “like new” performance to your four barrel carburetor. Detailed instructions are also included to guide you through the rebuilding process.

    Kit includes: 

    • Gaskets
    • O-Rings
    • Pump Diaphragms
    • Needle & Seats
    • Power Valves
    • Step-By-Step Instructions
    • Detailed Tuning Guide

    427-71539 Instructions (PDF)

  • Percy's 15013 Extened Dual Feed Carburetor Fuel Line-Holley 4150 -8 AN
    Percy's 15013 Extened Dual Feed Carburetor Fuel Line-Holley 4150 -8 AN
    (Part #25915013)
    x
                This extended length dual inlet carburetor fuel line from Percy's compensates for the extra length between fuel bowls when using Percy's Adjust-A-Jet adjustable metering blocks. Dual feed fuel log features -8 AN anodized aluminum fittings and works with Holley 4150 style Double Pumper carburetors.
            
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