Product Summary

Universal Fit, Block Hugger Header Tube Type, Painted

  • These small block Chevy tight fit headers work well on early hot rods with narrow frame widths due to the slim 4" distance from the flange to outermost point
  • 1-5/8" primary tubes and 2-1/2" collectors aid in fitting tight clearance applications
  • These come painted black for corrosion protection prior to use - we suggest stripping the paint and applying your preferred color of high temperature header paint
  • Oval exhaust ports fit stock small block Chevy heads - will not clear angle plug heads. Plugs not straight out, (772330)
  • Come complete with gaskets, header bolts, and 2" reducers to connect to your exhaust system

Key Specs

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

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Speedway Motors 9300101 Details

These small block Chevy tight-fit headers are the most universal steel tube shorty headers available. They even fit difficult applications where space is limited. The block hugger headers are a favorite for street rods, as well as many 1950s and 1960s cars and vintage trucks.

  • Most tight fit header applications require the use of Accel shorty spark plugs
  • Compact design
  • Will NOT fit angle plug heads
  • Includes reducers, gaskets and bolts
  • 1-5/8" primary tubes
  • 2-1/2" collector
  • Head Flange Thickness: 0.35"


  1. Can be used with most oil filter systems and transmission/starter combinations.
  2. Will not fit '55-'57 Chevy cars, Camaros, or other modern vehicles which have a crossmember below the engine's center two exhaust ports.
  3. Will not clear a "clam shell" style motor mount (found on 1973-newer Chevy cars & trucks).
  4. Will not clear angle plug heads.


Guides & Documents

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 9300101 Specifications

MFG. Part #9300101
BrandSpeedway Motors
Header Tube TypeBlock Hugger
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeSteel
Exhaust Port ShapeOval
Collector Diameter2-1/2 Inch
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Reducers IncludedNo
Collector Reducer Exit Diameter2"
Flange Thickness.35"
Port Height1.63"
Port Width1.41"
Header Dimension A3.75"
Header Dimension B10.00"
Header Dimension C18.38"
Sold in QuantityPair