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

"Oval Track, Carburetion" Page 1 of 6

  • 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 Stainless Steel Throttle Stop
    Gaerte Stainless Steel Throttle Stop
    (Part #3911500)
    x
                Earl Gaerte also came up with this slick stainless 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
    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.
            
  • Holley 0-86770HB Ultra Street Avenger 770 CFM 4 Barrel Carburetor
    Holley 0-86770HB Ultra Street Avenger 770 CFM 4 Barrel Carburetor
    (Part #42586770)
    x
                Please view the product's page for more information
            
  • Jiffy-Tite 300C1 Quick Connect Carb Fitting Kit, Gasoline
    Jiffy-Tite 300C1 Quick Connect Carb Fitting Kit, Gasoline
    (Part #468300C1)
    x
                Available in AN8 thread size with fluorocarbon seals standard for gasoline.  Methanol applications require buna seals to eliminate swelling.  Kit includes 2 plugs and 2 sockets and provides minimal flow restriction.  Features reusable type hose end sockets to be used with AN8 braided stainless steel Aeroquip type hose such as 617-308-length.  Carb fitting plug features 7/8"-20 thread to fit Holley 4150/4160 dual feed carburetors.
            
  • Kinsler Fuel Injection 3332 Bypass Valve Spring, 12 Lb.
    Kinsler Fuel Injection 3332 Bypass Valve Spring, 12 Lb.
    (Part #4733332)
    x
                Dial in your bypass valve with these standard bypass springs for use with alcohol carburetors. Spring has a .032" wire diameter.
            
  • Holley 37-1544 4150 4 Barrel Carburetor Rebuild Fast Kit
    Holley 37-1544 4150 4 Barrel Carburetor Rebuild Fast Kit
    (Part #427371544)
    x
                

    These kits are ideal for a quick refresher of your four barrel Holley carb. Each kit includes step-by-step instructions and a detailed tuning guide. Fits 650 CFM and 750 CFM carburetors.

    427-371544 Instructions (PDF)

  • Holley 0-7448 350 CFM Gas 2 Barrel Carburetor
    Holley 0-7448 350 CFM Gas 2 Barrel Carburetor
    (Part #4257448)
    x
                

    Holley Model 2300 two barrel carburetors are great for improving or updating many stock Chrysler and Ford car and truck applications. The 350 CFM 2 barrel carburetor is ideal for small blocks. It features a manual choke, center hung float bowl, universal throttle lever, power valve blow-out protection, blue non-stick gaskets, and Fort A/T kickdown.

    • Power Valve Blow-out Protection for trouble-free operation
    • Manual choke
    • Center Hung Float bowl
    • Factory set 30cc accelerator pump for excellent off-idle performance
    • Ford A/T kickdown, does not work with A.O.D. transmissions
    • Dichromate finish for a classic, period look that will last

    Holley 350 CFM 2 Barrel Carburetor Installation Instructions (PDF)

  • Willys Carbs WCD50127-E85 GM 604 Crate Motor 4 Barrel Carburetor, E85
    Willys Carbs WCD50127-E85 GM 604 Crate Motor 4 Barrel Carburetor, E85
    (Part #80080127E)
    x
                

    If you are running the GM 604 crate motor, you need one of these Willy's four barrel carburetors. They are specifically built and dyno tuned to give you maximum power from your crate engine.

    • Billet metering blocks
    • Based on a 750HP body, flows over 900 CFM
    • Down leg boosters
    • Choke horn/tower removed for increased flow
  • Lokar 1010111 Throttle Cable/Sprint Return Bracket Kit, 4 Hole, Blue
    Lokar 1010111 Throttle Cable/Sprint Return Bracket Kit, 4 Hole, Blue
    (Part #4911010111)
    x
                

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

    • Made in U.S.A
    • 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
  • Speedway Phenolic Open 1 Inch Carburetor Spacer
    Speedway Phenolic Open 1 Inch Carburetor Spacer
    (Part #1351901)
    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. 
    • Fits Holley 4150/4160 bolt pattern
    • 1" tall
    • Open design
    • Phenolic construction reduces heat transfer and increases power
  • Holley 0-76750HB 750 CFM Ultra Double Pumper 4 Barrel Carb
    Holley 0-76750HB 750 CFM Ultra Double Pumper 4 Barrel Carb
    (Part #42576750)
    x
                

    The new Ultra Double Pumper four barrel carburetors have an enhanced fuel curve for optimum performance, with many more features such as aluminum construction; Hard Core Gray™ finish w/ black anodized billet aluminum metering blocks and base plate; 4 corner idle for precise idle control; mechanical secondaries for great performance; clear fuel level sight plugs for easy, no mess fuel level adjustments; Ford automatic transmission kickdown for use on popular Ford transmissions; four vacuum ports for all necessary vacuum accessories; and for the first time on a Double Pumper, factory pre–set electric choke for easy, fast cold start–ups.

    • ULTRA light – aluminum construction for 36% weight savings
    • ULTRA strong – billet metering blocks & base plates
    • ULTRA cool – Hard Core Gray™ w/ black anodized billet aluminum metering blocks and base plate
    • ULTRA easy – built in sight window for simple float adjustments
    • ULTRA fast – high performance fuel curves

    Holley Double Pumper Carburetor Installation Instructions (PDF)

  • Willys Carbs WCD44120HA 2-Barrel Racing Carburetor, High Altitude
    Willys Carbs WCD44120HA 2-Barrel Racing Carburetor, High Altitude
    (Part #80044120HA)
    x
                Willy's two barrel carbs make much more power than stock, but retain the stock appearance and will pass tech. 
            
  • Holley 0-80787-1 Keith Dorton HP 350 CFM Gas 2 Barrel Carburetor
    Holley 0-80787-1 Keith Dorton HP 350 CFM Gas 2 Barrel Carburetor
    (Part #42780787)
    x
                This is the top of the line two barrel carb.  The famed carb guru, Keith Dorton, designed and massaged this two barrel carb to give you maximum performance.  Race ready features include: 

     

    • Purpose built for short track racing.
    • No choke provisions provides smoother airflow.
    • No vacuum or PCV holes.
    • 30 cc accel. pump for smoother "off the corner" use.
    • Power valve blowout protection
    • Button head throttle plate screws are loctited.
    • Screw-in air bleeds for precise tuning.
    • HP metering block for strength.
    • Factory flowed to insure quality.
    • Reusable fuel bowl screw gaskets.
    • Throttle shaft hole plugged to eliminate leaks.
    • Stainless steel throttle plates with air bypass holes for smooth idle.
    • All bore, throttle plate, venturi & critical sizes are to factory spec.
    • Welded throttle lever and shaft.
    Holley 2 Barrel Carb Installation Instructions (PDF)
  • Holley 116-2 Brass Center Hung Float
    Holley 116-2 Brass Center Hung Float
    (Part #4271162)
    x
                This Holley replacement brass carburetor float is for center hung float bowls.
            
  • Carb Inlet Fitting Adapter, -6 AN to 7/8-20
    Carb Inlet Fitting Adapter, -6 AN to 7/8-20
    (Part #6174022)
    x
                

    This -6 AN adapter fitting fits most Holley 4150 carburetors with 7/8"-20 inlet.

    Fitting Thread Application Chart (GIF)

  • Aeromotive 13301 Bypass Fuel Pressure Regulator, 3-60 PSI
    Aeromotive 13301 Bypass Fuel Pressure Regulator, 3-60 PSI
    (Part #91012804)
    x
                

    A dual purpose, universal fuel pressure regulator for EFI or carbureted applications. Base fuel pressure is adjustable from 3 to 20 PSI with standard spring(installed), or from 20 to 60 PSI with high pressure spring (included). Also acts as a rising rate fuel pressue regulator which raises pressure on a 1:1 ratio with boost. All ports are 3/8" NPT, with one inlet and three outlets on the main body and one return port on the bottom. Bypass fuel pressure regualtor design provides the ultimate, dynamic fuel pressure control.

    • Gasoline compatible only
    • Can regulate any fuel pump between 100 and 250 GPH
    • Fuel pressure rises on a 1:1 ratio when referencing boost
    • All ports are 3/8” NPT, with one inlet and three outlets on the main body and one return port on the bottom
    • Bypass design provides the ultimate, dynamic fuel pressure control

    910-12804 Instructions (PDF)

    Note: Requires a return line to be installed from the bottom of the regulator to the top of the tank.

  • Hi-Flow Squirter Screw
    $5.99
    Hi-Flow Squirter Screw
    (Part #54565442)
    x
                  The radiused head and added internal passages allow increased air and fuel flow. Easy installation. Gas Only.   
            
  • Speedway Phenolic 4-Hole 1 Inch Carburetor Spacer
    Speedway Phenolic 4-Hole 1 Inch Carburetor Spacer
    (Part #1351906)
    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 carbs with 1.467" diameter  bores. 
    • Fits Holley 4150/4160 bolt pattern
    • 1" tall
    • 4-hole design
    • 1.47" bore
    • Phenolic construction reduces heat transfer and increases power
  • Holley Wedged Float for Secondary Bowl
    $23.99
    $34.99
    Holley Wedged Float for Secondary Bowl
    (Part #42711614)
    x
                Made specially for the circle track carb. The fuel rides up the wedge and does not shut the fuel off sooner than it should.
            
  • Aluminum Open Carburetor Spacer, 4 Inch
    Aluminum Open Carburetor Spacer, 4 Inch
    (Part #5606091)
    x
                

    Aluminum Holley open carb spacer. Does NOT include gaskets or studs/hardware.

    • Open center port
    • Holley 4 barrel carburetors
  • Speedway .100 Inch Thick Open Base Gasket
    Speedway .100 Inch Thick Open Base Gasket
    (Part #13535022)
    x
                

    Speedway exclusive!

    • .100" thickness pushes the limits allowed by IMCA
    • Steel core prevents potential collapsing
    • Non-stick coating
    • Holley open design

     

  • Speedway Carter Fuel Pump Fuel Line Kit
    Speedway Carter Fuel Pump Fuel Line Kit
    (Part #6174080)
    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 stainless hose
    • Ss - aluminum fittings with blue hose
    • Stl - steel fittings with blue hose
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