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Block Hugger Tight-Fit Headers for ZZ4 Crate Motor, AHC Coated

SAME DAY SHIPPING! Order within the next 5 hours 18 minutes and receive same day shipping

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Specs
Material Type:
Steel
Sold in Quantity:
Pair
Flange Style:
D Port
Finish:
AHC Coated
Header Tube Type:
Block Hugger
MFG. Part #:
2301HKR
Gasket(s) Included:
Yes
Hardware Included:
Yes
Overall Height:
10.00
Tube O.D.:
1.63
Port Height:
1.56
Port Width:
1.51
Flange Thickness:
.38
Header Dimension A:
4.05
Header Dimension B:
10.05
Header Dimension C:
18.38
Collector Diameter :
2.5
Block Hugger Tight-Fit Headers for ZZ4 Crate Motor, AHC Coated
Block Hugger Tight-Fit Headers for ZZ4 Crate Motor, AHC Coated
VIDEO
Block Hugger Tight-Fit Headers for ZZ4 Crate Motor, AHC Coated

Click image to enlarge

Watch the video below to learn more about Speedway Motors Armor Hot Coat (AHC)

Please note the following about this product:

  • This item is sold as a pair.

Details

Reviews (0)

Q & A (7)

What's in the Box

Info

If you are lucky enough to have a GM small block crate motor with D-port heads (FastBurn, ZZ4, etc.) you will find that regular headers just don't work. These shorty headers were specifically designed for these heads. These tight-fit headers are ceramic coated headers that feature 1-5/8" primary tubes and 2-1/2" collectors with 2" reducers. Includes bolts and gaskets. The block hugger headers are designed to make difficult installations easy.

  • Collector exits parallel with the oil pan rail for maximum ground clearance
  • Made from lightweight & sturdy 18 gauge tubing
  • Tight-tuck design for narrow frame rails

Header Dimensions (GIF)

Notes

Armor Hot Coating (AHC) is a heat resistant, ceramic coating applied to the outside of the header. This coating will reflect heat, which helps retain more heat within the header tube while simultaneously speeding up the exhaust flow. Not only will this coating help you make more horsepower, it also keeps your headers rust-free, looking great, and lasting longer (when properly maintained).  If you are looking for a show-quality finish for your headers, this is it! Our AHC will withstand exhaust temperatures of up to 1300¢ª F. 

Warranties

Warning: AHC coatings will burn and be damaged at exhaust temperatures above 1300 degrees. A lean fuel mixture can generate exhaust temperatures exceeding 1700-1900 degrees. If the coating is damaged due to a lean condition, the coating will not be warranted, but can be recoated for a fee.

Customer Reviews

This product has no reviews.

Product Q&A

7 questions : 7 answers

1 answers

I have a ZZ4 in a 1971 Buick Skylark will these fit? The Skylark, and the Chevelle share the same chassis so I figured if these fit a Chevelle then the would fit a Skylark. Also are the Stainless version the same? My Skylarl has the ZZ4 crate engine, and a Turbo 350 trans (column shift)

Sfotce68
Spring, TX
December 10, 2014

I have a ZZ4 in a 1971 Buick Skylark will these fit? The Skylark, and the Chevelle share the same chassis so I figured if these fit a Chevelle then the would fit a Skylark. Also are the Stainless version the same? My Skylarl has the ZZ4 crate engine, and a Turbo 350 trans (column shift)

Answers

December 11, 2014
EricM
No these will not clear the crossmember in your Skylark. You will need headers like 9300110. That is a full length header that fits 71 Chevelle so as long as your engine is mounted in the exact same place as a Chevelle would have a Chevrolet engine mounted then they should fit. That header also fits the ZZ4 crate engine.
1 answers

Do these fit on ZZ4's with angled plugs?

itsa64
August 19, 2014

Do these fit on ZZ4's with angled plugs?

Answers

August 19, 2014
EricM
Yes these are designed for use on ZZ4 engines which have angle plugs.
1 answers

Will these headers work on the new ZZ5 engine

Lancer
New Mexico, USA
April 06, 2014

Will these headers work on the new ZZ5 engine

Answers

April 07, 2014
EricM
Yes these will fit the ZZ5 engine as well. The exhaust port is the same on the ZZ4 and ZZ5 engines.
1 answers

will this header work with a ram jet 350 crate motor in a 1956 chevy

chevyterry
Arkansas, USA
March 08, 2014

will this header work with a ram jet 350 crate motor in a 1956 chevy

Answers

March 10, 2014
EricM
No these headers will not fit your Ram Jet crate motor. It does not require any special header, a common SBC header will fit your engine just fine. The '55 to '57 chassis headers 930C7 should work for you but be sure to read through the fitment notes with those headers.
1 answers

Will these hedders #9302300H fit a 1976 Corvette with a ZZ4 engine?

PRIrish
July 02, 2013

Will these hedders #9302300H fit a 1976 Corvette with a ZZ4 engine?

Answers

July 02, 2013
Jason
These headers are specific to the ZZ4, Fastburn, or D-port heads. Verification of fit to your application requires some basic measuring. From head surface out 4" to the furthest point on the tubes, from top of the flange to bottom of the collector is 10", and the collector flange sits within 1" of the block. The collector is directly below the center two ports on the heads.
1 answers

I have a 350/330 HO crate motor with cast iron vortec heads going into a C3 (1978), corvette. Is this the correct part? Thanks

Sweeney210
San Antonio Tx
January 16, 2012

I have a 350/330 HO crate motor with cast iron vortec heads going into a C3 (1978), corvette. Is this the correct part? Thanks

Answers

January 18, 2012
John
Part number 9302300H These headers fit crate engines having Fast Burn, D-port, or ZZ4 port configuration. If your Vortec heads have this configuration they will work fine. If you have the standard small block round or square port with rounded corners our standard tight fit headers such as number 9300101H are available and if an angle plug application number 9309037H will be the answer.
1 answers

I have an 89' L98 with D port aluminum heads going into 82' corvette. Will these headers fit.

bdk2580
ironton,ohio
July 30, 2015

I have an 89' L98 with D port aluminum heads going into 82' corvette. Will these headers fit.

Answers

July 31, 2015
Zach
Expert
Yes they will fit the D port heads fine
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