Bill Smith
Founder, 1929-2014
Speedy Bill
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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

  • Holley Carburetor Gas Needle and Seat, .110 Inch
    Holley Carburetor Gas Needle and Seat, .110 Inch
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                "Viton" needle and seat is resistant to dirt and provides superior seal when closed. Size .110" for gas carbs. Gasket not included. 
            
  • Holley Power Valve
    From: $9.99
    Product Rating: 5.00 Stars
    Holley Power Valve
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                Standard flow. Available sizes include: 2.5, 3.5, 4.5, 5.5, 6.5, 7.5, 8.5, 9.5 and 10.5 in hg. 

    High flow (big window valve) for alcohol. Available sizes include: 2.5, 3.5, 4.5, 5.5, 6.5, 8.5, 10.5 in hg.

  • Holley 135-5 30cc Accelerator Pump Diaphragm
    Holley 135-5 30cc Accelerator Pump Diaphragm
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                Holley accelerator pump diaphragms are available in 30cc (427-1355) or 50cc (427-1357) sizes. For use with gasoline only.
            
  • Holley 12-807 Fuel Pressure Regulator Diaphragm Repair Kit
    Holley 12-807 Fuel Pressure Regulator Diaphragm Repair Kit
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    These genuine Holley diaphragm repair kits will allow you to restore the performance of your high-mileage fuel pressure regulator. With these repair kits, you'll regain the accuracy and performance of the regulator from when it was new.

    This diaphragm repair kit is for 12-803 and 12-804 regulators.

    MFG. Part #: 12-807

  • Holley Chrome Fast Idle Cam Plate
    Holley Chrome Fast Idle Cam Plate
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    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
  • Wehrs Machine WM47 Carburetor Feet
    Wehrs Machine WM47 Carburetor Feet
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                Bolt to the base of your carburetor so you can work on it without damaging the throttle assembly.
    • 5/16”-18 threads
    • 1-1/2” tall
    • Set of 4 (nuts included)
  • Moroso 65221 Fuel Level Control Kit
    Moroso 65221 Fuel Level Control Kit
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    This fuel level control kit from Moroso increases bowl capacity by 40% to eliminate fuel starvation problems.  Foam baffles prevent fuel slosh to eliminate the chance of the jets being uncovered under hard cornering, braking or acceleration.  Fits Holley 2 and 4 bbl carbs with metering blocks and removable jets. Does one end of a Holley carb.

    Kit contains one float bowl spacer, four foam baffles, one accelerator pump arm, four 3-1/4" float bowl bolts, two float bowl gaskets and four nylon float bowl screw gaskets.

    545-65221 Instructions (PDF) 

  • Clear View Sight Plugs
    $4.99
    Product Rating: 3.67 Stars
    Clear View Sight Plugs
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                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".
            
  • Carb Link Bushings
    $2.99
    Product Rating: 5.00 Stars
    Carb Link Bushings
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                Aluminum carb linkage bushings eliminate sloppiness of rubber bushings. 5/16" thru hole.
            
  • Speedway Aluminum Fuel Log for Holley Carburetor
    Speedway Aluminum Fuel Log for Holley Carburetor
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    This fuel log 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 -8 AN inlet and two -8 AN outlets. Threaded 3/4" NPT (plugged) on back that can be used for a return line. Carburetor fuel line also has 1/8" NPT outlet for fuel pressure gauge (fittings sold separately). 

    • 9-1/4" from fitting to fitting
    • Standard Holley spacing is 9-1/4"
  • Holley 4150 Aluminum Float Bowl Kit
    Holley 4150 Aluminum Float Bowl Kit
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    These lightweight aluminum center-hung fuel bowls have glass sight windows for easy float adjustments. They fit Proform, Quick Fuel and Holley double pumper carburetors.

    Kit includes two fuel bowls, gaskets and anodized fuel inlets.

  • Carburetor Stud Kit, 1-3/8 Inch
    Carburetor Stud Kit, 1-3/8 Inch
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    Caburetor Stud Kit, 1 3/8"

    Easy installation/removal of carb plates. Includes zinc plated steel studs, nuts and washers.

  • Holley 0-4412CT Circle Track 500 CFM 2 Barrel Carburetor
    Holley 0-4412CT Circle Track 500 CFM 2 Barrel Carburetor
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                This 500cfm 4412CT Holly carb shares the hugely  successful features of the original 4412C but with a couple changes  aimed for circle track cars. The choke has been removed but the horn  remains and has been specially calibrated for circle track use. The  4412C Holley carb is easily the most winningest two barrel carburetor on the market  and comes out of the box ready to run. 

    Features:
    • Choke delete
    • Choke horn remains
    • 50cc accelerator pump
    • 1 timed (spark) port, 1 full vacuum, & 1 PCV port
    • The mandated carbs for many oval track racing sanctioning bodies
    • Calibrated specifically for circle track use
  • Universal Carb Adapter, Tapered Port
    Universal Carb Adapter, Tapered Port
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                Adapts all  '50s style 1-7/16" WCFB or 4 Jet carbs with smaller base pattern to all large and medium base 1-11/16" port  or open 4 barrel carb manifolds. This tapered port carburetor adapter comes with gaskets for the top and bottom as well as all mount hardware. 
    • 7/16" thick spacer
    • 4 Barrel Carburetors
    • Tapered 4-hole port
  • Jet Performance 37001 Rochester Circle Track 2 Barrel Carburetor
    Jet Performance 37001 Rochester Circle Track 2 Barrel Carburetor
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    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
  • Holley 2300 to Rochester 2G Two Barrel Intake Carburetor Adapter
    Holley 2300 to Rochester 2G Two Barrel Intake Carburetor Adapter
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    This aluminum carb adapter plate lets you adapt a large Holley 2300 series 2-barrel carburetor to a Rochester 2G 4-bolt 2-barrel intake manifold base. The adapter features an open plenum design and measures 1/2" thick. The carburetor adapter includes two gaskets and all necessary hardware to install.

    • Adapts Holley 2300 (or equivalent Ford/Motorcraft) to Rochester 2G/Carter intake
    • Smaller bolt pattern: 1-7/8" x 3-1/4"
    • Larger bolt pattern: 3-1/2" x 5-1/8"
    • Adapter is 1/2" thick

    Note: With just a little work with a file, the adapter can also be used to adapt an intake manifold with a 2" x 3-3/4" bolt pattern to the Holley 2300/Ford/Motorcraft 2 barrel carburetor as well.

  • Plastic Open Carburetor Spacer, 1 Inch
    Plastic Open Carburetor Spacer, 1 Inch
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                These open center carburetor spacers are designed to fit Holley 4150/4160 bolt pattern 4 barrel carbs. They are IMCA approved and are made to reduce heat conductivity for optimum performance.
    • Plastic spacer reduces heat conductivity 10 times greater than aluminum
    • Results in a denser, more powerful fuel charge to the manifold
    • Fits Holley 4150/4160 bolt pattern
    • IMCA approved
    • Includes studs, nuts & washers (gaskets not included)
  • Adjustable Fuel Log for 4150 Holley Style Carbs
    Adjustable Fuel Log for 4150 Holley Style Carbs
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    These CNC aluminum fuel logs are adjustable which allows them to fit carbs easier. It is designed to permit removing/replacing either bowl (or both) without having to use a wrench on the fuel line. A double O-ring in the slide prevents leaks. 

    • 3/8" hose barb inlet
    • 1/8" NPT female port w/ plug on inlet side
    • 9-1/4 Inch Centers
  • Holley 12-804 Adjustable Fuel Pressure Regulator, 1-4 PSI
    Holley 12-804 Adjustable Fuel Pressure Regulator, 1-4 PSI
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    This Holley universal low pressure fuel regulator is factory-set to 2.7 PSI, but is fully adjustable from 1 to 4 PSI. Use with standard pump only - not recommended for maximum pressure pumps. Fuel pressure regulator includes mounting bracket.

    Regulator has a 3/8" NPT tapped fuel pressure gauge port and requires reducer 617-6157 to install the gauge. Fuel pump regulator has 3/8" NPT inlet/outlet ports.

    427-12804 Instructions (PDF)

  • Hi-Flow Squirter Screw
    $5.99
    Hi-Flow Squirter Screw
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                  The radiused head and added internal passages allow increased air and fuel flow. Easy installation. Gas Only.   
            
  • Speedway Plastic Carburetor Caps
    Speedway Plastic Carburetor Caps
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    • Fits Holley, Thermoquad, and Quadrajet carbs with 5-1/8" diameter necks
    • 2-1/4" tall
    • Keeps dust and other foreign material out
    • Durable, high-impact plastic
    • Available in black, blue, purple, red, white, yellow
  • Holley 36-181 Main Jet Assortment
    $54.99
    $69.99
    Product Rating: 5.00 Stars
    Holley 36-181 Main Jet Assortment
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    Includes two each of all Holley jets from sizes #64 - #99. A total of 36 different sizes are provided in a convenient plastic storage box.

    Speedway carries jet sizes from #46 - #100 individually for all your performance needs.

  • Holley 37-1544 4150 4 Barrel Carburetor Rebuild Fast Kit
    Holley 37-1544 4150 4 Barrel Carburetor Rebuild Fast Kit
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    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 116-2 Brass Center Hung Float
    Holley 116-2 Brass Center Hung Float
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                This Holley replacement brass carburetor float is for center hung float bowls.
            
  • Holley 26-102 Nylon Fitting Gasket: 7/8 Inch
    Holley 26-102 Nylon Fitting Gasket: 7/8 Inch
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    • 7/8"
    • Nylon
    • 2 per package
  • Holley Main Jets
    $7.99
    Product Rating: 4.50 Stars
    Holley Main Jets
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                Threaded, easy install and replacement. Available in #45 to #100.
            
  • Universal Quadrajet Carb Adapter, Open Center
    Universal Quadrajet Carb Adapter, Open Center
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    Lets you adapt most Holley 4 bbl. carbs to a Quadra-Jet intake manifold (and vice-versa). Includes a Quadraget base gasket, a Holley base gasket, and mounting hardware. Adapter is .7255" thick.

    • Fits Holley 4 Barrel Carburetors
    • Tapered open center
    • .7255" thick spacer

  • IMCA Spec Rochester 2G Carb Adaptor for Crate Engines
    IMCA Spec Rochester 2G Carb Adaptor for Crate Engines
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                For use with 500 CFM rebuilt Rochester carburetor. This plate is 0.515" thick.
            
  • Billet Aluminum Carb Cover
    $19.99
    Billet Aluminum Carb Cover
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                Lightweight yet durable, these o-ringed billet aluminum carb covers offer outstanding protection against both damage and debris. Fits 5-1/8" carb necks. 
            
  • Aluminum Open Carburetor Spacer, 4 Inch
    Aluminum Open Carburetor Spacer, 4 Inch
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    Aluminum Holley open carb spacer. Does NOT include gaskets or studs/hardware.

    • Open center port
    • Holley 4 barrel carburetors
  • Percy's 66021 Seal-4-Good Reusable Base Plate Gasket
    Percy's 66021 Seal-4-Good Reusable Base Plate Gasket
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                Advanced EMR polymer insures reusability. Will not stick like ordinary paper gaskets. Allows quicker carburetor removal and replacement.  Gasket is 0.0640" thick.
            
  • Holley 12-803 Fuel Pressure Regulator, 2-Port, 4.5-9 PSI
    Holley 12-803 Fuel Pressure Regulator, 2-Port, 4.5-9 PSI
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    These adjustable fuel pressure regulators from Holley can be adjusted from 4-1/2 to 9 PSI to regulate fuel pressure for various types of carburetors. Fuel pump regulator works well with Holley high performance fuel pumps. Use one fuel regulator per fuel bowl for high flow applications.

    This fuel pressure regulator has a 3/8" NPT gauge port and requires reducer 617-6157 to install a fuel pressure gauge.

    427-12803 Instructions (PDF)

  • Holley 37-474 2 Barrel 500 CFM Rebuild Kit
    Holley 37-474 2 Barrel 500 CFM Rebuild Kit
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    Each Holley Renew Kit carburetor rebuild kit contains all parts and gaskets that are necessary to restore “like new” performance to your 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.

    Fits Holley Model 2300 500cfm two barrel carburetors ONLY.

    • Gaskets
    • O-Rings
    • Pump Diaphragm
    • Needle & Seat
    • Power Valve
    • Instructions

    427-37474 Instruction Sheet (PDF)

  • Aluminum Adjustable Throttle Linkage Rod
    Aluminum Adjustable Throttle Linkage Rod
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    Accelerator linkage rod is 25-1/2" long with 1/4" rod ends.

    • 25-1/2" long "hex" aluminum
    • 1/4" male rod ends
    • Anodized purple

     

  • Carburetor Stud Kit, 2 Inch
    $2.99
    Carburetor Stud Kit, 2 Inch
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                Easy installation/removal of carb plates. Includes zinc plated steel studs, nuts and washers. 
            
  • Universal 2 Barrel Carburetor Adapter
    Universal 2 Barrel Carburetor Adapter
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                Adapts quad pattern to most 4-bolt 2 bbl. pattern. Gaskets and hardware included.

    2-barrel patterns on centers:
    5-1/8" x 3-7/16"
    3-1/2" x 1-7/8"

    4-barrel patterns on centers:
    5-1/8" x 5-9/16"
    4-1/4" x 5-9/16"
    3-3/4" x 3-7/8"
  • Holley Alcohol Needle & Seat, .150 Inch
    Holley Alcohol Needle & Seat, .150 Inch
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    With a .150" seat, this needle and seat assembly is about as big as you can get. This needle design is very responsive to changes in flow rates and has excellent sealing capabilities. "Viton" needle and seat is resistant to dirt and provides superior seal when closed. Size .150" for alcohol carbs. Gasket not included.

    • .150" seat
    • Adjustable
    • Stainless Steel
    • Compatable with racing fuels that contain benzine, acetone and alcohol
    • Gasket not included

     

  • Hilborn Fuel Injection F510C-1 .030 Inch Shims for Bypass Valve Spring
    Hilborn Fuel Injection F510C-1 .030 Inch Shims for Bypass Valve Spring
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                Dial in your main bypass spring (473-3319, 473-3328, 473-3332) with this .030" shim kit. Pack of 5 shims.
            
  • BSB Manufacturing 4711 Telescoping Carburetor Fuel Log
    BSB Manufacturing 4711 Telescoping Carburetor Fuel Log
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    This BSB Manufacturing fuel log slides in and out to fit virtually any Holley style carb. Carburetor fuel line features a three O-ring design to eliminate leakage.

    • Log features -8AN inlet
    • 3/8" NPT rear port
    • Aluminum Fuel Bowl Gaskets included

    Note:  Catalog correction- This unit does not feature an 1/8" NPT port.  Fitting # 617-7035 can be used in conjunction with this item when an 1/8" NPT port is required.

  • Holley 37-1542 4160 4 Barrel Carburetor Rebuild Fast Kit
    Holley 37-1542 4160 4 Barrel Carburetor Rebuild Fast Kit
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    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.

    427-371542 Instructions (PDF)

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