Product Summary

Universal Fit, Roadster Header Tube Type, Raw, Steel

  • This big block Chevy weld up header kit features 2" primary tubes and 3-1/2" collectors for for racing and rodding applications
  • Header flanges fit 396, 402, 427, 454, and 502 Chevy big block engines
  • 18 gauge mild steel tubing allows for easy welding and fabircation
  • Kit includes 8 mandrel bent primary tubes, 2 pre-formed collectors, 2 extra thick oval port flanges, 2 gaskets, and 12 header bolts
  • Mandrel bent tubing is full size throughout the bend to maximize flow and increase horsepower

Key Specs

MFG. Part #41865640
BrandSpeedway Motors
Header Tube TypeRoadster
Material TypeSteel

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These B/B Chevy (BBC) headers feature 18 gauge mild steel designed for many racing and rodding applications where 396, 402, 427, 454 and 502 Chevy engines are used. Headers have a 2" diameter tube and 3-1/2" diameter collector. Kit includes eight mandrel-bent primary tubes,  two pre-formed collectors, two extra-thick oval port flanges, two gaskets and twelve header bolts.

Designed for the seasoned, hands-on enthusiast, weld up headers will require some cutting, fitting and welding.


CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.


MFG. Part #41865640
BrandSpeedway Motors
Header Tube TypeRoadster
Material TypeSteel
Flange StyleStandard
Primary Tube Diameter2"
Exhaust Port ShapeRound
Collector Diameter3-1/2 Inch
Collector Length12.00"
Flange Thickness.31"
Port Height2.065"
Port Width2.065"
Gasket(s) IncludedYes
Sold in QuantityKit
Collector Attachment TypeSlip fit
Collector Reducers IncludedNo