Product Summary

Universal Fit, Block Hugger Header Tube Type, Chrome

  • Universal header
  • Complete with reducers, gaskets and bolts
  • Primary tube 1 5/8" o.d. and 2 1/2" collector
  • 90% of tight fit header applications require the use of shorty spark plugs
  • Note: not for angle plug heads

Key Specs

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

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Speedway Motors 9300101C 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. These 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"


Chrome Warning: Due to a revised chroming process brought on by recent EPA regulations and high labor costs, todays chrome is not the quality of days gone by. Be Aware: Exhaust components which are chrome plated are now much more susceptible to blueing, blistering, peeling & corrosion. No warranty or returns on chrome exhaust items once them have been installed.

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

Item Details


  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).


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 9300101C Specifications

MFG. Part #9300101C
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 Attachment Type3-bolt flange
Collector Reducers IncludedYes
Collector Reducer Exit Diameter2.25"
Flange Thickness.35"
Port Height1.63"
Port Width1.41"
Header Dimension A3.75"
Header Dimension B10.00"
Header Dimension C18.38"
Sold in QuantityPair
NotesWill not clear angle plugs.