Product Summary

Universal Fit, Block Hugger Header Tube Type, Polished

  • 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
  • Beautifully polished stainless steel construction ensure outstanding looks for years to come
  • Oval exhaust ports fit stock small block Chevy heads - will not clear angle plug heads
  • 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 TypeStainless Steel

Need To Know

This Product Will Ship Free

Shipping Policies & FAQs

Quick and Easy Returns

Return Policy

Speedway Motors 9300107 Details

The most universal shorty header just got better! Now made of durable stainless steel, these tight-fit headers feature a heavy duty 3/8" thick flange to minimize warpage with 1-5/8" diameter primary tubes and 2-1/2" diameter collectors. Block hugger headers are ideal for street rod engine swaps and can make tight installations easy. They tuck in close to the engine block to provide clearance for frame rails, steering boxes and motor mounts, but please see dimension chart to verify fit for your application.

The head flange features tall oval ports, so they will fit a variety of small block Chevy cylinder heads (EXCEPT angle plug heads). The collectors exit parallel with the oil pan rail to provide maximum ground clearance. Headers include gaskets, collector reducers with a 2" diameter outlet, and stainless steel installation hardware.

NOTE: Stainless header tubing when exposed to exhaust temperature will cause the finish to change color which will vary with the exhaust temperature. Please note that the finish of the header when the engine is started, will change to a light champagne color to a darker gold finish and in some instance may even turn dark blue or purple. This can be polished back out when utilizing Blue-away or Simi-chrome polish, but please note that when the headers reach running temperature again, they will immediately change color.


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 9300107 Specifications

MFG. Part #9300107
BrandSpeedway Motors
Header Tube TypeBlock Hugger
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeStainless Steel
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"
Overall Height10"
Flange Thickness.38"
Port Height1.63"
Port Width1.37"
Header Dimension A4.00"
Header Dimension B10.50"
Header Dimension C18.38"
Sold in QuantityPair
NotesWill NOT work with angle plug heads. Made from 304 stainless