Product Summary

Universal Fit, Block Hugger Header Tube Type, Raw

  • Designed to be used with standard exhaust port S/B Chevy heads that have angle spark plugs
  • 1 5/8" primary tubes and 2 1/2" collectors
  • Complete with reducers, gaskets and bolts

Key Specs

Header Tube TypeBlock Hugger
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeSteel

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Speedway Motors 9308037 Details

These tight-fit headers are designed to be used with standard exhaust port Small Block Chevy heads that have angle spark plugs. Features 1-5/8" primary tubes and 2-1/2" collectors with 2-1/4" outlets. These shorty headers are perfect for tight-fit installations. 

The block hugger hearders come with bolts, gaskets and reducers. The port openings on the tight fit headers are round and work fine on heads with round or rectangle ports.


  1. Can be used with most oil filter systems and transmission/starter combinations.
  2. Does not fit '55-'57 Chevy cars, Camaros, or other modern vehicles which have a crossmember below the engine's center two exhaust ports.


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.

Speedway Motors 9308037 Specifications

MFG. Part #9308037
BrandSpeedway Motors
Header Tube TypeBlock Hugger
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeSteel
Exhaust Port ShapeRound
Collector Diameter2-1/2 Inch
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Attachment Type3-bolt flange
Collector Reducers IncludedYes
Collector Reducer Exit Diameter2.25"
Overall Height10.25"
Flange Thickness.32"
Port Height1.55"
Port Width1.5"
Header Dimension A4.15"
Header Dimension B10.30"
Header Dimension C18.25"
Sold in QuantityPair