Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Spark Plugs, Wires and Accessories

Speedway Motors has all the essential performance ignition components and accessories muscle car owners crave! We stock everything from low-resistance spark plugs & wires and HEI distributors to ignition coils and MSD ignition control boxes. Our great selection from quality brands is why Speedway Motors is the only place to get your performance muscle car ignition parts.

Featured Products
  • Accel 0566-4 14mm U-Groove Spark Plug-5/8 Hex, .460 Reach Tapered Seat
    Accel 0566-4 14mm U-Groove Spark Plug-5/8 Hex, .460 Reach Tapered Seat
    (Part #105262)
    x
                

    Accel's patented U-groove design provides a hotter spark and increased horsepower. 

    U-Groove Benefits:

    • More power to the wheels
    • Improved ignitability
    • Improved throttle response and fuel efficiency
    • Develops larger spark nucleus for improved combustion and reduced fouling 
  • Red 7mm Solid Core Spark Plug Wire, 20 Ft.
    Red 7mm Solid Core Spark Plug Wire, 20 Ft.
    (Part #91064011)
    x
                

    Transparent red insulation on the cable allows you to actually see the woven wire core inside. Just trim to length and crimp on terminals. It readily accepts all normal boots and terminals available at local part stores, or use with Rajah ends.

    • Wire Diameter:  7mm
    • Wire Type:  Solid Core (Non-EMI Suppression)

    Not for use with multi-spark ignition boxes, such as MSD 6A or 6AL.

    Learn how to properly attach new spark plug terminals and boots by reading our tech article. How to Install Spark Plug Wire Ends.

  • Moroso Spark Plug Wires, Under Headers, HEI Cap, Ready-To-Install
    Moroso Spark Plug Wires, Under Headers, HEI Cap, Ready-To-Install
    (Part #91064310)
    x
                If you have ever tried to put plug wires together yourself, you know how fustrating it can be. These pre-assembled Moroso 7mm spiral core wires are fiberglass reinforced with a silicone outer layer. Wires have 90° boots on both ends. Available in red or black for small block Chevy.
            
  • MSD 32203 Black Super Conductor 5.0L Mustang, 94-on
    MSD 32203 Black Super Conductor 5.0L Mustang, 94-on
    (Part #54732203)
    x
                The MSD 8.5mm Super Conductor Wire is "the" performance wire.Engineered from the inside out, the 8.5 offers everything you have everwanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD 8.5mm Super Conductor Plug Wire is available in Universal Kits and Bulk Lengths.

    Installation Instructions (PDF)

    Installation Instructions (PDF)

    • Spark Plug Boot Protectors, Set/8
      Spark Plug Boot Protectors, Set/8
      (Part #6982524)
      x
                  Spark plug protector eliminates that melted boot problem! Heat treated fiberglass, universal size fits most boots - even 90°. Protects up to 1200°. Non-flammable, non-reactive to petroleum products and resists water and fungus. Overall length is 6.25".
              
    • MSD 35389 Super Conductor Plug Wires, Ford 351C-460, With HEI Cap
      MSD 35389 Super Conductor Plug Wires, Ford 351C-460, With HEI Cap
      (Part #54735389)
      x
                  The MSD 8.5mm Super Conductor Wire is "the" performance wire.Engineered from the inside out, the 8.5 offers everything you have everwanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD 8.5mm Super Conductor Plug Wire is available in Universal Kits and Bulk Lengths.

      Installation Instructions (PDF)

      Installation Instructions (PDF)

      • DEi 010502 Protect-A-Boot Spark Plug Boot Heat Shield, Silver, 8 Pack
        DEi 010502 Protect-A-Boot Spark Plug Boot Heat Shield, Silver, 8 Pack
        (Part #35610502)
        x
                    

        Protect-A-Boots are made from a high temperature resistant glass fiber material and treated with a proprietary coating, Protect-A-Boots provide spark plug boot and wire protection from extreme under hood heat.

        • Double-wall construction for added durability
        • Helps prevent burn-through, hardening and cracking of boots
        • Installs in seconds
        • Universal-fits most straight or angled boots
        • Withstands 1200°F direct continuous heat
        • Non-flammable & protects against chemicals & resists water

        Protect-A-Boot Instructions (PDF)

        Exhaust Wrap Frequently Asked Questions (PDF)  

         

      • Red Spark Plug Wire Terminal & Boot Kit
        Red Spark Plug Wire Terminal & Boot Kit
        (Part #91064250)
        x
                    

        Designed for use with our 7mm Red Spark Plug Wires (shown below).

        This Terminal and Boot Kit contains:

        • Eight 90° Spark Plug HEI style boots
        • Eight 90° Spark Plug HEI style terminals
        • One 90° Boot & Terminal for coil end of coil wire
        • Nine 90° Spark Boots for "socket style" cap
        • Eight 90° Terminals for "socket style" cap
        • Nine Straight Boots for "socket style" cap
        • Eight Straight Terminals for "socket style" cap

        Learn how to properly attach new spark plug terminals and boots by reading our tech article. How to Install Spark Plug Wire Ends.

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      "Muscle Car, Spark Plugs, Wires and Accessories" Page 1 of 17

      Page 1 of 17

      • Accel 8023 8.8 Spiral Core Spark Plug Wires, HEI, Straight Boot
        Accel 8023 8.8 Spiral Core Spark Plug Wires, HEI, Straight Boot
        (Part #1058023)
        x
                    

        Makes power, not static.  With today's mega-watt, ultra-sensitive car stereo systems, that means "hiss-free" high fidelity. Thanks to a special graphite-impregnated fiberglass conductor, ACCEL 8.8 wire has the structural integrity to handle the high performance that can cause other wires to self-destruct.  Yellow only.

        • Rated to 550 degrees F
        • 8.8mm yellow high temp silicone jacket
        • For race and street applications
        • 500 ohm/ft. RFI suppression
        • Red plug boots

        Learn how to properly attach new spark plug terminals and boots by reading our tech article. How to Install Spark Plug Wire Ends.

      • MSD 31889 Red Super Conductor Ford 4.6L, 5.4L, Universal
        MSD 31889 Red Super Conductor Ford 4.6L, 5.4L, Universal
        (Part #54731889)
        x
                    The MSD 8.5mm Super Conductor Wire is "the" performance wire.Engineered from the inside out, the 8.5 offers everything you have everwanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD 8.5mm Super Conductor Plug Wire is available in Universal Kits and Bulk Lengths.

        Installation Instructions (PDF)

        • 40-50 Ohms per foot of resistance!
      • MSD 32939 Super Conductor Plug Wires, 98-01 Ford ZX-2, 2.0L, 4 cyl
        MSD 32939 Super Conductor Plug Wires, 98-01 Ford ZX-2, 2.0L, 4 cyl
        (Part #54732939)
        x
                    Please view the product's page for more information
                
      • MSD 32709 Super Conductor Plug Wires, Diamante, GT3000 Turbo V6 92-96
        MSD 32709 Super Conductor Plug Wires, Diamante, GT3000 Turbo V6 92-96
        (Part #54732709)
        x
                    Please view the product's page for more information
                
      • MSD 5561 Street-Fire Wire Set Chevy 366-454 Socket
        MSD 5561 Street-Fire Wire Set Chevy 366-454 Socket
        (Part #5475561)
        x
                    The Street Fire Spark Plug Wires feature a low resistance conductor thats wrapped in a sleek and durable black sleeve. The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery.
        • Helically wound conductor suppresses electro and radio noise
        • Kevlar core combination for great strength and durability
        • Heavy duty terminals for secure connection
        • 8mm silicone and synthetic jacket resists heat and abrasion
        • 500 Ohms per foot resistance for improved spark delivery and power
        • Silicone boots protect against high exhaust temps
      • MSD 31223 Black Super Conductor 8 Cyl, 90 Deg Plug, 90 Deg Plug
        MSD 31223 Black Super Conductor 8 Cyl, 90 Deg Plug, 90 Deg Plug
        (Part #54731223)
        x
                    The MSD 8.5mm Super Conductor Wire is "the" performance wire.Engineered from the inside out, the 8.5 offers everything you have everwanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD 8.5mm Super Conductor Plug Wire is available in Universal Kits and Bulk Lengths.

        Installation Instructions (PDF)

        • DEi 010502 Protect-A-Boot Spark Plug Boot Heat Shield, Silver, 8 Pack
          DEi 010502 Protect-A-Boot Spark Plug Boot Heat Shield, Silver, 8 Pack
          (Part #35610502)
          x
                      

          Protect-A-Boots are made from a high temperature resistant glass fiber material and treated with a proprietary coating, Protect-A-Boots provide spark plug boot and wire protection from extreme under hood heat.

          • Double-wall construction for added durability
          • Helps prevent burn-through, hardening and cracking of boots
          • Installs in seconds
          • Universal-fits most straight or angled boots
          • Withstands 1200°F direct continuous heat
          • Non-flammable & protects against chemicals & resists water

          Protect-A-Boot Instructions (PDF)

          Exhaust Wrap Frequently Asked Questions (PDF)  

           

        • MSD 32279 Super Conductor Plug Wires Dodge, Chrys, Ply.,Mit. 2.0L DOHC
          MSD 32279 Super Conductor Plug Wires Dodge, Chrys, Ply.,Mit. 2.0L DOHC
          (Part #54732279)
          x
                      The MSD 8.5mm Super Conductor Wire is "the" performance wire.Engineered from the inside out, the 8.5 offers everything you have everwanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD 8.5mm Super Conductor Plug Wire is available in Universal Kits and Bulk Lengths.
          • MSD 34615 90deg. Spark Plug Terminals, 100 each
            MSD 34615 90deg. Spark Plug Terminals, 100 each
            (Part #54734615)
            x
                        These spark plug terminals are what you need when you custom make your own sets. Available in 100 quanties.
                    
          • MSD 5571 Street-Fire Wire Set Chev Pickup, BB EFI, 90-97
            MSD 5571 Street-Fire Wire Set Chev Pickup, BB EFI, 90-97
            (Part #5475571)
            x
                        The Street Fire Spark Plug Wires feature a low resistance conductor thats wrapped in a sleek and durable black sleeve. The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery.
            • Helically wound conductor suppresses electro and radio noise
            • Kevlar core combination for great strength and durability
            • Heavy duty terminals for secure connection
            • 8mm silicone and synthetic jacket resists heat and abrasion
            • 500 Ohms per foot resistance for improved spark delivery and power
            • Silicone boots protect against high exhaust temps
          • Moroso Spark Plug Wires, Over Valves, Socket Cap, Ready-To-Install
            Moroso Spark Plug Wires, Over Valves, Socket Cap, Ready-To-Install
            (Part #91064305)
            x
                        If you have ever tried to put plug wires together yourself, you know how fustrating it can be. These pre-assembled Moroso 8mm spiral core wires are fiberglass reinforced with a silicone outer layer. Wires have 90° boots on both ends. Available in red or black for small block Chevy.

            Note: Standard Cap = Socket-style Cap = Points-style Cap

          • MSD 34033 Super Conductor Bulk Wire, Black 6Ft
            MSD 34033 Super Conductor Bulk Wire, Black 6Ft
            (Part #54734033)
            x
                        Please view the product's page for more information
                    
          • MSD 31369 Super Conductor Plug Wires Chevy 454, 74-76 HEI
            MSD 31369 Super Conductor Plug Wires Chevy 454, 74-76 HEI
            (Part #54731369)
            x
                        The MSD 8.5mm Super Conductor Wire is "the" performance wire.Engineered from the inside out, the 8.5 offers everything you have everwanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD 8.5mm Super Conductor Plug Wire is available in Universal Kits and Bulk Lengths.

            Installation Instructions (PDF)

            • MSD 34039 Super Conductor 8.5mm Wire, 6Ft Bulk
              MSD 34039 Super Conductor 8.5mm Wire, 6Ft Bulk
              (Part #54734039)
              x
                          Please view the product's page for more information
                      
            • MSD 31869 Super Conductor Plug Wires, Buick Grand Natl ,3.8L Distless
              MSD 31869 Super Conductor Plug Wires, Buick Grand Natl ,3.8L Distless
              (Part #54731869)
              x
                          Please view the product's page for more information
                      
            • MSD 30829 Super Conductor Plug Wires,BB Chevy, With 8541 Crab Cap
              MSD 30829 Super Conductor Plug Wires,BB Chevy, With 8541 Crab Cap
              (Part #54730829)
              x
                          Please view the product's page for more information
                      
            • MSD 31383 Black Super Conductor Ford 351C-400, Socket
              MSD 31383 Black Super Conductor Ford 351C-400, Socket
              (Part #54731383)
              x
                          The MSD 8.5mm Super Conductor Wire is "the" performance wire.Engineered from the inside out, the 8.5 offers everything you have everwanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD 8.5mm Super Conductor Plug Wire is available in Universal Kits and Bulk Lengths.

              Installation Instructions (PDF)

              • MSD 5560 Street-Fire Wire Set Chevy 454, 74-76 HEI
                MSD 5560 Street-Fire Wire Set Chevy 454, 74-76 HEI
                (Part #5475560)
                x
                            The Street Fire Spark Plug Wires feature a low resistance conductor thats wrapped in a sleek and durable black sleeve. The terminals are covered in black boots that protect the conductor from engine heat to ensure spark delivery.
                • Helically wound conductor suppresses electro and radio noise
                • Kevlar core combination for great strength and durability
                • Heavy duty terminals for secure connection
                • 8mm silicone and synthetic jacket resists heat and abrasion
                • 500 Ohms per foot resistance for improved spark delivery and power
                • Silicone boots protect against high exhaust temps
              • MSD 32203 Black Super Conductor 5.0L Mustang, 94-on
                MSD 32203 Black Super Conductor 5.0L Mustang, 94-on
                (Part #54732203)
                x
                            Please view the product's page for more information
                        
              • MSD 31373 Black Super Conductor Big Block Chevy, Socket
                MSD 31373 Black Super Conductor Big Block Chevy, Socket
                (Part #54731373)
                x
                            The MSD 8.5mm Super Conductor Wire is "the" performance wire.Engineered from the inside out, the 8.5 offers everything you have everwanted in a wire; incredibly low resistance without electronic interference! In a single 12 inch length of Super Conductor Wire there is only 40 - 50 ohms of resistance! That is the lowest resistance of any helically wound wire. To accomplish this, we use a copper alloy conductor due to it's great voltage carrying capabilities. The low resistance results in less loss in spark energy so more reaches the spark plug. The conductor is wound extremely tight around a special center core. So tight in fact, that there is over 40 feet of conductor wrapped into a single foot of plug wire. This winding procedure, combined with a ferro-magnetic impregnated center core, produces an extremely effective Electro Magnetic Interference (EMI) "choke". This choke, or suppression capability, keeps the EMI inside the wire where it cannot interfere with other electronics on your vehicle. The outer sleeve that surrounds the conductor assembly is just as impressive. A proprietary blend of silicone and synthetic material produce a sleeve that is highly resistant to high heat as well as abrasion and tears. The MSD 8.5mm Super Conductor Plug Wire is available in Universal Kits and Bulk Lengths.

                Installation Instructions (PDF)

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