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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.Fits these chassis:BMSDirt WorksGRTHarrisJetShaw
These Dynatech Long-Tube Headers have longer primary pipes to produce maximum torque and horsepower. They come with gaskets, bolts, hardware and fit small-block Chevys with angle-plug or straight-plug heads.
Works with angle-plug or straight-plug SBC.
Fits angle or straight plug headsFor Standard Chevy or Crate Engine applicationsGaskets, bolts and hardware included
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.
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.
9171185MFG. Part #1185Tube O.D.1.625" (1 5/8")Collector Diameter3.000"Flange StyleRound PortFlange Thickness0.250" (1/4")Hardware IncludedYesGasket(s) IncludedYesFinishPaintedSold in QuantityPair
These Schoenfeld long primary high velocity modified headers are the "baddest" headers for your IMCA modified with a S/B Chevy engine. Stepped 1-3/4" to 1-7/8" primary tubes and 3-1/2" x 9" collector. For standard port heads. Dirtworks style.
Schoenfeld IMCA modified header features long style header for DirtWorks and most others chassis except for D&M and Harris Chassis. 1-3/4" tube with 3-1/2" collector. Not a step design. Adjustable.
These S/B Chevy IMCA headers fit most IMCA modified chassis. Can be run upside down to gain clearance. Good choice for tracks requiring mufflers. For standard port S/B Chevy heads. Gaskets and bolts included.
Left and right crash replacement Modified Headers Spread Port for Harris, Skyrocket, Hughes, Victory, BMS, J Car, Jet and Sardeson.
Left and right crash replacement headers for IMCA Modified design.
Left and right crash replacement Modified Header for Dirt Works, Champion, Hot, Pro, Impressive, Lightning, D&M, Hoffman and Shaw.
Left and right crash replacement headers for Pierce Modified design.