Product Summary

Universal Fit, Block Hugger Header Tube Type, Natural

  • Compact design
  • OEM-style exhaust pipe connection
  • 3/8” thick flanges w/ oval 1.29" x 1.67 port configuration
  • Header bolts and exhaust gaskets are included
  • Collector reducers are not included but are offered below
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Key Specs

MFG. Part #9300104S
Header Tube TypeBlock Hugger
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 9300104S Details

If you are using 1992-and-later LT4 style D-port heads in your street rod, these tight-fit headers are for you. The tight-fit design fits in a wide variety of applications, and the shorty headers have built-in OEM-style donut seals on the collectors so no gaskets or collector reducers are needed.

  • Compact design
  • OEM-style exhaust pipe connection
  • 3/8” thick flanges w/ oval 1.29" x 1.67 port configuration
  • Header bolts and exhaust gaskets are included
  • Collector reducers are not included but are offered below
  • May require modifications to accommodate knock sensors in some applications

Application

  • 1992 and later LT-4 engines
  • Compact design will fit a wide variety of early street rods
  • Will not fit 1955-1957 Chevys, Camaros, Chevelles or other modern cars with crossmembers under the two center exhaust ports

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 utilizingBlue-awayorSimi-chrome polish, but please note that when the headers reach running temperature again, they will immediately change color.

Charts

Guides & Documents

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.

Speedway Motors 9300104S Specifications

KEY SPECS
MFG. Part #9300104S
BrandSpeedway Motors
Header Tube TypeBlock Hugger
Exhaust Port ShapeOval
Flange StyleStandard
Primary Tube Diameter1-5/8"
Material TypeStainless Steel
ColorNatural
Weld-UpNo
Collector Diameter2-1/2 Inch
FinishRaw
Hardware IncludedYes
Gasket(s) IncludedYes
Collector Reducers IncludedNo
Collector Attachment TypeBall and socket
GENERAL
Sold in QuantityPair
Flange Thickness0.38"
Port Height1.67"
Port Width1.29"
Overall Height10.5"
Header Dimension A4.25"
Header Dimension B10.50"
Header Dimension C18.38"

Ratings & Reviews

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I would buy this product again before I would consider the options

5.0

10 years ago

Sneds76

West union, IL

Verified

I used these on my zz4 crate engine in my 1976 corvette and they fit perfectly!

Would Recommend

Showing 1 of 1 reviews

Questions & Answers

3 Questions • 3 Answers

Will these work with LT1 steel heads?

by Magman

• 9 years ago

1 answer

what is the correct collector/flange to connect these to a 2.5" stainless exhaust?

by troy

• 10 years ago

1 answer

is this 304 stainless ? hello[ is this 304 stainless ? what gage is the tube ? these are for 'D' port exhaust ports ! what about angled plugs ? like on the zz4 ! #fairly important detail#. what flange/reducer do you recommend ? is it stainless ? thanks

by goofa

• 12 years ago

1 answer

3 of 3 questions shown

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