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  • Dynatech IMCA Modified Headers, 1-3/4 Primary, 3.5 Inch Collector
    Dynatech IMCA Modified Headers, 1-3/4 Primary, 3.5 Inch Collector
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    • Fits angle or straight plug heads
    • For Standard Chevy or Crate Engine applications
    • Gaskets, bolts and hardware included

    Header Dimension Chart

  • Speedway Adjustable Small Block Chevy IMCA Headers
    Speedway Adjustable Small Block Chevy IMCA Headers
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    Get your Modified breathing better and making maximum power for less money with Speedway adjustable IMCA headers. The stepped header design has adjustable-length primaries to allow for power tuning and variances in engine and foot box location. Adjustable pipe length allows you to shorten headers to work better on longer tracks, or leave pipes long for optimum performance on short tracks.

    • Quality construction with plain steel finish
    • All the features of more expensive headers, without the high price tag
    • Adjustable-length primary pipes for performance tuning
    • Pipe length can be adjusted for foot box and engine location
    • Fits IMCA Modifieds with a S/B Chevy standard exhaust port pattern
    • Includes gaskets and header bolts
    • 60-degree turnout on driver's side
    • 90-degree turnout on passenger side

    Header Dimension Chart

  • Left Side Crash Replacement IMCA Modified Header, 1-3/4 - 1-7/8 Inch Stepped
    Left Side Crash Replacement IMCA Modified Header, 1-3/4 - 1-7/8 Inch Stepped
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    Left hand side crash replacement Modified Header for Dirt Works, Champion, Hot, Pro, Impressive, Lightning, D&M, Hoffman and Shaw.

    Tube Size: 1.750-1.875

    Application: Small Block Chevy  

  • Right Side Crash Replacement IMCA Modified Header, 1-3/4 - 1-7/8 Inch Stepped
    Right Side Crash Replacement IMCA Modified Header, 1-3/4 - 1-7/8 Inch Stepped
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    Right hand side crash replacement Modified Header for Dirt Works, Champion, Hot, Pro, Impressive, Lightning, D&M, Hoffman and Shaw.

    Tube Size: 1.750-1.875

    Application: Small Block Chevy  

  • Schoenfeld Headers 1186 IMCA Modified Long Style Headers
    Schoenfeld Headers 1186 IMCA Modified Long Style Headers
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    Long style headers for Dirtworks and most others (does not fit D&M).  1-3/4" tube with 3-1/2" collector.  Not a step design.  Not adjustable.

    Header Dimension Chart

  • Schoenfeld 11619H IMCA Sport Modified Headers
    Schoenfeld 11619H IMCA Sport Modified Headers
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                These IMCA Sport Modified headers are designed for use with Harris, Shaw, Skyrocket, and Victory style chassis. They feature 1-5/8" primaries with 3" x 8" collectors and bolt to standard port Chevy heads.
    • 1-5/8" tube diameter
    • 3 x 8" collector
    • Standard Chevy flange
    • Bolts and gaskets included
    Fits:
    • Harris
    • Shaw
    • Skyrocket
    • Victory

    Header Dimension Chart

  • Left Side Crash Replacement Modified Chevy Header, 1-3/4 Inch
    Left Side Crash Replacement Modified Chevy Header, 1-3/4 Inch
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    Left hand side crash replacement Modified Header for Harris, Skyrocket, Hughes, Victory, BMS, J Car, Jet and Sardeson.

    IMCA Modified Header 

    Tube Size: 1.750"

    Application: Small Block Chevy   

  • Right Side Crash Replacement Modified Chevy Header, 1-3/4 Inch
    Right Side Crash Replacement Modified Chevy Header, 1-3/4 Inch
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    Right hand side crash replacement Modified Header for Harris, Skyrocket, Hughes, Victory, BMS, J Car, Jet and Sardeson.

    IMCA Modified Header 

    Tube Size: 1.750"

    Application: Small Block Chevy   

  • Garage Sale - Dynatech 11-838301 Dirt Modified Small Block Chevy Tri-Y Headers, 1.75-1.875
    Garage Sale
    Garage Sale - Dynatech 11-838301 Dirt Modified Small Block Chevy Tri-Y Headers, 1.75-1.875
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    • Tri-Y design promotes significant low-end & mid-range torque gains without sacrificing high-end horsepower
    • Fits angle or straight plug heads
    • For Standard Chevy or Crate Engine applications
    These headers are garage sale priced because they are new old stock and have some surface rust.  These do not include gaskets or bolts.
     
     NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS  
  • Dynatech   Long Tube Modified Headers, 1-3/4 Primary, 3-1/2 Inch Collector
    Dynatech Long Tube Modified Headers, 1-3/4 Primary, 3-1/2 Inch Collector
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    These Dynatech® Mid-Length Headers are designed to deliver a smooth power band and will fit your BMS, Dirt Works, GRT, Harris, Jet or Shaw chassis. They fit small-block Chevy applications with angle-plug or straight-plug heads and come with gaskets, bolts and hardware.
     
    • Includes gaskets, bolts and hardware.
    • Works with angle-plug or straight-plug SBC. 

    These headers will work with the following chassis:

    • BMS
    • DirtWorks
    • Hot
    • Pro
    • Jet
    • KMod
    • Smiley's
    • Quick
    • Pierce
    • Hoffman
    • Sardeson
    • Victory 
    • GRT
    • Harris
    • Shaw

     

  • Dynatech   Long Tube Modified Headers, 1-3/4 - 1-7/8 Primary, 3-1/2 Collector
    Dynatech Long Tube Modified Headers, 1-3/4 - 1-7/8 Primary, 3-1/2 Collector
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    These Dynatech® Mid-Length Headers are designed to deliver a smooth power band and will fit your BMS, Dirt Works, GRT, Harris, Jet or Shaw chassis. They fit small-block Chevy applications with angle-plug or straight-plug heads and come with gaskets, bolts and hardware.
     
    • Works with angle-plug or straight-plug SBC. 
    • Includes gaskets, bolts and hardware. 

    These headers will work with the following chassis:

    • BMS
    • DirtWorks
    • Hot
    • Pro
    • Jet
    • KMod
    • Smiley's
    • Quick
    • Pierce
    • Hoffman
    • Sardeson
    • Victory
    • GRT
    • Harris
    • Shaw

     

  • Right Side Crash Replacement Modified Long Tube, 1-3/4 - 1-7/8 Inch Stepped
    Right Side Crash Replacement Modified Long Tube, 1-3/4 - 1-7/8 Inch Stepped
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    Right hand side crash replacement headers for modified long tube design.

    IMCA Modified Header 

    Tube Size: 1.750-1.875

    Application: Small Block Chevy  

  • Dynatech   01-19901 IMCA Modified Headers, Pierce Modified
    Garage Sale
    Dynatech 01-19901 IMCA Modified Headers, Pierce Modified
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    All Dynatech® IMCA Modified headers are built with CNC laser-machined flanges. With port holes accurate to .003" and total warp less than .025", you can be assured that you will get all the performance and quality possible from your headers. Long tube design with proper range of tube lengths delivering maximum power, but with a flatter torque curve.

     

    Clearance!

     

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

     

  • Garage Sale - Dynatech IMCA Modified Headers, Angled Adj, 1-5/8 - 1-3/4, 3 Collector
    Garage Sale
    Garage Sale - Dynatech IMCA Modified Headers, Angled Adj, 1-5/8 - 1-3/4, 3 Collector
    x
                
    These headers are garage sale priced because they are new old stock.
     
     NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS   
    • Fits angle or straight plug heads
    • For Standard Chevy or Crate Engine applications
    • Gaskets, bolts and hardware included

    Header Dimension Chart

  • Speedway Small Block Chevy IMCA Headers, AHC Coated
    Speedway Small Block Chevy IMCA Headers, AHC Coated
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                These small block Chevy IMCA headers fit most IMCA modified chassis. They can be run  upside down to gain clearance and are a good choice for tracks requiring  mufflers. These AHC coated headers are for standard port S/B Chevy heads. Gaskets and bolts included.
    • For small block Chevy heads
    • AHC ceramic coating helps reflect heat and prevent rust
    • Withstands exhaust temperatures up to 1300 deg.F
    • 1-3/4" primaries
    • 3-1/2" collector
    • Fits most IMCA type modified chassis
    • Includes gaskets and header bolts

    Header Dimension Chart

  • Garage Sale - Dynatech   1.63 - 1.75 D.I.R.T. Modified Headers
    Garage Sale
    Garage Sale - Dynatech 1.63 - 1.75 D.I.R.T. Modified Headers
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    Fits standard small block Chevy heads.

    NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS

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