Product Summary

Chevy Small Block V8, Crossover Header Tube Type, Steel

  • 1 3/4" SB Chevy
  • Not 180 degree header
  • Standard port
  • Includes gaskets and header bolts

Key Specs

MFG. Part #91013146H
BrandSpeedway Motors
Header Tube TypeCrossover
FinishCeramic Coated
Material TypeSteel

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Speedway small block Chevy crossover headers (not a 180° header). Good for use with mufflers.

  • 1-3/4" primaries
  • 3-1/2" collector
  • Standard port
  • Armor Hot Coat finish
  • Includes gaskets and header bolts



Armor Hot Coating (AHC) is a heat resistant, ceramic coating applied to the outside of the header. This coating will reflect heat, which helps retain more heat within the header tube while simultaneously speeding up the exhaust flow. Not only will this coating help you make more horsepower, it also keeps your headers rust-free, looking great, and lasting longer (when properly maintained).  If you are looking for a show-quality finish for your headers, this is it! Our AHC will withstand exhaust temperatures of up to 1300¢ª F.

AHC Warning: AHC coatings will burn and be damaged at exhaust temperatures over 1300 degrees. A lean fuel mixture can generate exhaust temperatures exceeding 1700-1900 degrees. If the coating is damaged due to a lean condition, the coating will not be warranted, but can be recoated for a fee.

Not legal for sale or use in California on pollution controlled vehicles.

CARB Warning

For race/ off road use only

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. 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 #91013146H
BrandSpeedway Motors
Header Tube TypeCrossover
FinishCeramic Coated
Material TypeSteel
Flange StyleStandard
Primary Tube Diameter1-3/4"
Exhaust Port ShapeRectangle
Collector Diameter3-1/2 Inch
Collector Length8"
Flange Thickness.31"
Port Height1.75"
Port Width1.38"
Drivers Side Dimension A6.30"
Drivers Side Dimension B7.00"
Drivers Side Dimension C33.75"
Passenger Side Dimension A6.95"
Passenger Side Dimension B9.32"
Passenger Side Dimension C41.00"
Hardware IncludedYes
Gasket(s) IncludedYes
Sold in QuantityPair
Collector Attachment TypeSlip fit
Collector Reducers IncludedNo