Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Shop Muscle Car Headers & Exhaust At Speedway Motors

Speedway Motors has the muscle car headers and mufflers you need, at a price you can afford. Check out our huge inventory of chassis headers, LS1 swap headers and tight-fit block hugger headers, all available with durable ceramic AHC coating, polished, or stainless steel. Don't forget about our cast iron exhaust manifolds and dual exhaust kits as well. With an awesome selection of high performance Flowmaster mufflers, exhaust wrap, glasspacks, and exhaust tips, Speedway can help you get the roar you want from your muscle car without the roar from your wife for spending too much money!

"Muscle Car, Brackets, Flanges and Hangers" Page 1 of 3

  • GM 5.3/6.0 Truck Exhaust Flanges, Mild Steel, 2.25 Inch
    GM 5.3/6.0 Truck Exhaust Flanges, Mild Steel, 2.25 Inch
    (Part #9160002)
    x
                

    You just bought your LS and plan on using the factory exhaust manifolds, but noticed they have odd shaped collector flanges. Now what? These flanges bolt to the factory factory manifold and allow for a smooth installation. Flanges are 3/8" thick.

    Specify driver or passenger side.

  • LS1 Chevy Header Flange Plates, Round Port, 1-5/8 Inch
    LS1 Chevy Header Flange Plates, Round Port, 1-5/8 Inch
    (Part #41811017)
    x
                

    LS1 Chevy exhaust manifold flange plates for headers have round ports and are CNC cut from 5/16" thick mild steel.

     

  • Dynatech Stainless Steel LS Header Flange, 1.940 Inch Port, 3/8 Thick
    Dynatech Stainless Steel LS Header Flange, 1.940 Inch Port, 3/8 Thick
    (Part #31179616061)
    x
                A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®s  biggest advantages is the wide selection of port machined flanges. All the header flanges are CNC laser machined for unparalleled quality and fit. 
    • For GM LS1 V-8 engines
    • Flanges are sold individually
    • Use with Stainless Gaskets
  • Dynatech Small Block Chevy 23 Deg. Header Flange, 3/8 Thick, 1.63 Port
    Dynatech Small Block Chevy 23 Deg. Header Flange, 3/8 Thick, 1.63 Port
    (Part #31179600622)
    x
                

    A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®s biggest advantages is the wide selection of port machined flanges.  All the header flanges are CNC laser machined for unparalleled quality and fit.

    • Flanges are sold individually
    • Use with Fiber Gaskets (part number 31179400001)
     

     

  • Big Block Chevy Header Flange Plates
    Big Block Chevy Header Flange Plates
    (Part #41811016)
    x
                

    Build or modify your own headers with these exhaust manifold flange plates. Header flange only. Does not include adaptor pipe or gaskets.

    • Approximately 3/8” thick
    • 2" Round port design

     

  • Dynatech 796-18061 Stainless Ford 4.6L 2V Header Flange
    Dynatech 796-18061 Stainless Ford 4.6L 2V Header Flange
    (Part #31179618061)
    x
                

    A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®s biggest advantages is the wide selection of port machined flanges.  All the header  flanges are CNC laser machined for unparalleled quality and fit.

    • For Ford 4.6L 2V Modular V-8 engines
    • Flanges are sold individually
    • Use with Stainless Gaskets (at right)
  • GM LT1 Exhaust Flanges, Mild Steel
    GM LT1 Exhaust Flanges, Mild Steel
    (Part #9160008)
    x
                

    You just bought your LT1 and plan on using the factory exhaust manifolds, but noticed they have odd shaped collector flanges. Now what? These flanges bolt to the factory factory manifold and allow for a smooth installation. Flanges ared 3/8" thick.

    Specify driver or passenger side.

  • Big Block Ford 429/460 Header Flanges
    Big Block Ford 429/460 Header Flanges
    (Part #41811143)
    x
                Build or modify your own headers with these exhaust manifold flange plates. Header flange only. Does not include adaptor pipe or gaskets.
            
  • Big Block Mopar Header Flange
    Big Block Mopar Header Flange
    (Part #41811130)
    x
                

    Build or modify your own headers with these exhaust manifold flange plates. Header flange only. Does not include adaptor pipe or gaskets. Port size is 1-5/8" x 1-3/8".  5/16" Thick.

    This flange set is for Chrysler engines such as 361-383-400 & 440.

  • Small Block Chevy Oval Port 1-5/8 Inch Header Flanges
    Small Block Chevy Oval Port 1-5/8 Inch Header Flanges
    (Part #41811010)
    x
                

    Build or modify your own headers with these flange plates. These exhaust manifold flanges have oval ports. This is a pair of header flanges only, no bolts and no gaskets included,  Flange is 5/16" thick.

    Header Flange Plate Chart Application

     

  • Dynatech 6.1L Hemi Exhaust Header Flange
    Dynatech 6.1L Hemi Exhaust Header Flange
    (Part #31179610661)
    x
                

    A great exhaust system starts at the beginning - the flange and gaskets.  One of Dynatech®'s biggest advantages is the wide selection of port matched flanges.  All of Dynatech's flanges are CNC laser machined for unparalleled quality and fit.

    • CNC laser machined
    • For 6.1L SRT Hemi
    • Sold each
  • Dynatech Small Block Chevy 23 Deg. Header Flange, 1/4 Thick, 1.63 Port
    Dynatech Small Block Chevy 23 Deg. Header Flange, 1/4 Thick, 1.63 Port
    (Part #31179600022)
    x
                

    A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®s biggest advantages is the wide selection of port machined flanges.  All the header flanges are CNC laser machined for unparalleled quality and fit.

    • Flanges are sold individually
    • Use with Fiber Gaskets (part number 31179400001)
     

     

  • Dynatech Big Block Chevy Exhaust Header Flange, 2.125 Port, 5/16 Thick
    Dynatech Big Block Chevy Exhaust Header Flange, 2.125 Port, 5/16 Thick
    (Part #31179631536)
    x
                

    A great exhaust system starts at the beginning - the flange and gaskets.  One of Dynatech®'s biggest advantages is the wide selection of port matched flanges.  All of Dynatech's flanges are CNC laser machined for unparalleled quality and fit.

    • CNC laser machined
    • For BBC
    • 2.125" port / 2.224" X,Y / 5/16" thick
    • Sold each
  • Small Block Mopar 273-360 Header Flanges
    Small Block Mopar 273-360 Header Flanges
    (Part #41811127)
    x
                Build or modify your own headers with these exhaust manifold flange plates. Header flange only. Does not include adaptor pipe or gaskets. 5/16 thick.
            
  • Dynatech 796-16071 Stainless 4.6L Cobra 4V Header Flange
    Dynatech 796-16071 Stainless 4.6L Cobra 4V Header Flange
    (Part #31179616071)
    x
                

    A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®s biggest advantages is the wide selection of port machined flanges. All the header flanges are CNC laser machined for unparalleled quality and fit.

    • For 2007 Ford Mustang 4 Valve Cobra 4.6L engines
    • Flanges are sold individually
    • Use with Stainless Gaskets
  • Dynatech Stainless Steel LS Header Flange, 1.820 Inch Port, 3/8 Thick
    Dynatech Stainless Steel LS Header Flange, 1.820 Inch Port, 3/8 Thick
    (Part #31179613000)
    x
                A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®s  biggest advantages is the wide selection of port machined flanges. All the header flanges are CNC laser machined for unparalleled quality and fit. 
    • For GM LS1 V-8 engines
    • Flanges are sold individually
    • Use with Stainless Gaskets
  • GM 604 Fast Burn Vortec Bow-Tie Square Port Header Flanges
    GM 604 Fast Burn Vortec Bow-Tie Square Port Header Flanges
    (Part #41811019)
    x
                Build or modify your own headers with these flange  plates. These exhaust manifold flanges have square ports. This is a pair  of header flanges only, no bolts and no gaskets included.
    • 1-5/8" Tube Size
    • Flange is 1/4" thick
    • Flanges ONLY

    Header Flange Plate Chart Application

  • Steel Exhaust Collector Ring, 2-1/2 Inch
    Steel Exhaust Collector Ring, 2-1/2 Inch
    (Part #91013369)
    x
                Mild steel flanges can be welded to exhaust pipes, mufflers or header collectors so your exhaust system can easily be unbolted and removed. Flanges are 1/4" thick and feature the common 3-bolt mount pattern.
            
  • GM 5.3/6.0 Truck Exhaust Flanges, Mild Steel, 2.5 Inch
    GM 5.3/6.0 Truck Exhaust Flanges, Mild Steel, 2.5 Inch
    (Part #9160004)
    x
                

    You just bought your LS and plan on using the factory exhaust manifolds, but noticed they have odd shaped collector flanges. Now what? These flanges bolt to the factory factory manifold and allow for a smooth installation. Flanges are 3/8" thick.

    Specify driver or passenger side.

  • Dynatech Big Block Chevy Exhaust Header Flange, 2.375 Port, 3/8 Thick
    Dynatech Big Block Chevy Exhaust Header Flange, 2.375 Port, 3/8 Thick
    (Part #31179621638)
    x
                

    A great exhaust system starts at the beginning - the flange and gaskets.  One of Dynatech®'s biggest advantages is the wide selection of port matched flanges.  All of Dynatech's flanges are CNC laser machined for unparalleled quality and fit.

    • CNC laser machined
    • For BBC
    • 2.375" port / 2.476" X,Y / 3/8" thick
    • Sold each
  • Dynatech 796-60514 LS Mild Steel Header Flange, 1-7/8 Port
    Dynatech 796-60514 LS Mild Steel Header Flange, 1-7/8 Port
    (Part #31179660514)
    x
                

    A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®s biggest advantages is the wide selection of port machined flanges. All the header flanges are CNC laser machined for unparalleled quality and fit.

    • Flanges are sold individually
    • Use with Fiber Gaskets (at right)
     

     

  • Small Block Ford 289-351W Header Flange - 1-3/4 Inch
    Small Block Ford 289-351W Header Flange - 1-3/4 Inch
    (Part #41811139)
    x
                

    Build or modify your own headers with these exhaust manifold flange plates. Header flange only. Does not include adaptor pipe.

    • Small Block Ford header flange for stock head configuration
    • Schoenfeld gasket number 9170350 works with this flange

     

  • Big Block Ford 390-428 Header Flanges
    Big Block Ford 390-428 Header Flanges
    (Part #41811141)
    x
                Build or modify your own headers with these exhaust manifold flange plates. Header flanges only. Does not include adaptor pipe or gaskets.
            
  • GM 5.3/6.0 Truck Exhaust Flanges, Stainless Steel, 2.25 Inch
    GM 5.3/6.0 Truck Exhaust Flanges, Stainless Steel, 2.25 Inch
    (Part #9160001)
    x
                

    You just bought your LS and plan on using the factory exhaust manifolds, but noticed they have odd shaped collector flanges. Now what? These 304 stainless flanges bolt to the factory factory manifold and allow for a smooth installation. Flanges are 3/8" thick.

    Specify driver or passenger side.

  • Dynatech 1999-03 Ford 4.6/5.4L Exhaust Header Flange
    Dynatech 1999-03 Ford 4.6/5.4L Exhaust Header Flange
    (Part #31179619061)
    x
                

    A great exhaust system starts at the beginning - the flange and gaskets.  One of Dynatech®'s biggest advantages is the wide selection of port matched flanges.  All of Dynatech's flanges are CNC laser machined for unparalleled quality and fit.

    • CNC laser machined
    • For 1999-03 Ford 4.6/5.4L
    • Sold each
  • GM F-Body LS1 Exhaust Flanges, Stainless Steel
    GM F-Body LS1 Exhaust Flanges, Stainless Steel
    (Part #9160005)
    x
                

    You just bought your LS1 and plan on using the factory exhaust manifolds, but noticed they have odd shaped collector flanges. Now what? These 304 stainless flanges bolt to the factory factory manifold and allow for a smooth installation. Flanges are 3/8" thick.

    Specify driver or passenger side.

  • Dynatech Stainless 5.7L Hemi Stainless Steel Header Flange, Left Side
    Dynatech Stainless 5.7L Hemi Stainless Steel Header Flange, Left Side
    (Part #31179610761)
    x
                

    A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®'s biggest advantages is the wide selection of port machined flanges. All the header flanges are CNC laser machined for unparalleled quality and fit.

    • For Mopar/Dodge/Chrysler 5.7L HEMI V-8
    • Flanges are sold individually
    • Use with Stainless Gaskets
    • Fits left side

    NOTE: Flanges for Drivers side and Passenger side are different.   

  • Dynatech Small Block Chevy 23 Deg Header Flange, 3/8 Thick, 1.75 Port
    Dynatech Small Block Chevy 23 Deg Header Flange, 3/8 Thick, 1.75 Port
    (Part #31179600613)
    x
                

    A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®s biggest advantages is the wide selection of port machined flanges.  All the header flanges are CNC laser machined for unparalleled quality and fit.

    • Flanges are sold individually
    • Use with Fiber Gaskets (part number 31179400001)
     

     

  • GM F-Body LS1 Exhaust Flanges, Mild Steel
    GM F-Body LS1 Exhaust Flanges, Mild Steel
    (Part #9160006)
    x
                

    You just bought your LS1 and plan on using the factory exhaust manifolds, but noticed they have odd shaped collector flanges. Now what? These flanges bolt to the factory factory manifold and allow for a smooth installation. Flanges are 3/8" thick.

    Specify driver or passenger side.

  • Steel Exhaust Hanger Brackets, 7 Inch
    Steel Exhaust Hanger Brackets, 7 Inch
    (Part #91001311)
    x
                

    Universal steel exhaust hangers make fabricating your own exhaust system a little easier. Sold in pairs.

    Use with poly grommets listed to help isolate exhaust vibrations.

  • Dynatech Small Block Chevy Reher-Morrison Drag Racing Header Flange
    Dynatech Small Block Chevy Reher-Morrison Drag Racing Header Flange
    (Part #31179670515)
    x
                

    A great exhaust system starts at the beginning - the flange and gaskets.  One of Dynatech®'s biggest advantages is the wide selection of port matched flanges.  All of Dynatech's flanges are CNC laser machined for unparalleled quality and fit.

    • CNC laser machined
    • For Reher-Morrison SBC
    • 2" port / 2.030" X,Y / 5/16" thick
    • Sold each
  • Dynatech Big Block Chevy Exhaust Header Flange, 2-1/4 Port, 3/8 Thick
    Dynatech Big Block Chevy Exhaust Header Flange, 2-1/4 Port, 3/8 Thick
    (Part #31179621637)
    x
                

    A great exhaust system starts at the beginning - the flange and gaskets.  One of Dynatech®'s biggest advantages is the wide selection of port matched flanges.  All of Dynatech's flanges are CNC laser machined for unparalleled quality and fit.

    • CNC laser machined
    • For BBC
    • 2.25" port / 2.35" X,Y / 3/8" thick
    • Sold each
  • Steel Exhaust Collector Ring, 3 Inch
    Steel Exhaust Collector Ring, 3 Inch
    (Part #91013370)
    x
                Mild steel flanges can be welded to exhaust pipes, mufflers or header collectors so your exhaust system can easily be unbolted and removed. Flanges are 1/4" thick and feature the common 3-bolt mount pattern.
            
  • Schoenfeld LS1 Chevy Header Flange Plates, Round Port, 1-3/4 Inch
    Schoenfeld LS1 Chevy Header Flange Plates, Round Port, 1-3/4 Inch
    (Part #41811018)
    x
                

    LS1 Chevy exhaust manifold flange plates for headers have round ports and are CNC cut from 5/16" thick mild steel.

     

  • Ford Boss 351C Header Flanges
    Ford Boss 351C Header Flanges
    (Part #41811142)
    x
                Build or modify your own headers with these exhaust manifold flange plates. Header flange only. Does not include adapter pipe or gaskets.
            
  • Stainless GM LT1 Exhaust Flange, Driver Side
    Stainless GM LT1 Exhaust Flange, Driver Side
    (Part #9160007)
    x
                

    You just bought your LT1 and plan on using the factory exhaust manifolds, but noticed they have odd shaped collector flanges. Now what? These 304 stainless flanges bolt to the factory factory manifold and allow for a smooth installation. Flanges ared 3/8" thick.

    Specify driver or passenger side.

  • Steel Exhaust Hanger Brackets, 4 Inch
    Steel Exhaust Hanger Brackets, 4 Inch
    (Part #91001301)
    x
                

    Universal steel exhaust hangers make fabricating your own exhaust system a little easier. Sold in pairs.

    Use with poly grommets listed to help isolate exhaust vibrations.

  • Small Block Chevy Header Flange Plate - 1 3/4 Inch
    Small Block Chevy Header Flange Plate - 1 3/4 Inch
    (Part #41811011)
    x
                

    Build or modify your own headers with these exhaust manifold flange plates. This part number no longer includes gaskets or bolts.

    Header Flange Plate Chart Application

  • Dynatech Small Block Chevy 23 Deg Header Flange 1/4 Thick 1.75 Port
    Dynatech Small Block Chevy 23 Deg Header Flange 1/4 Thick 1.75 Port
    (Part #31179600013)
    x
                

    A great exhaust system starts at the begining - the exhaust manifold flange. One of Dynatech®s biggest advantages is the wide selection of port machined flanges.  All the header flanges are CNC laser machined for unparalleled quality and fit.

    • Flanges are sold individually
    • Use with Fiber Gaskets (part number 31179400001)
     

     

  • Steel Exhaust Collector Ring, 3-1/2 Inch
    Steel Exhaust Collector Ring, 3-1/2 Inch
    (Part #91013371)
    x
                Mild steel flanges can be welded to exhaust pipes, mufflers or header collectors so your exhaust system can easily be unbolted and removed. Flanges are 1/4" thick and feature the common 3-bolt mount pattern.
            
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