NHRA 2020 Rule Amendment SS Intakes???

James L Miller · 12-05-2019, 09:00 PM

" External modifications prohibited except for the following, intake side of head may be +/- 2 degrees from OEM angle between combustion chamber surface to intake flange surface, may not be cut into any part of valve-cover fastener holes (except for SS/AH). Intake manifold fastener holes must remain unaltered in their original location. Only OEM intake fastener holes are permitted, any additional fastener holes are prohibited. Spacer plates between intake manifold and cylinder head prohibited. Valve-cover fastener holes must remain unaltered and in their original location."

So, does the angle rule get exempted for the SS/AH cars, or is that just for the "valve-cover fastener holes"? It's not entirely clear to me for those cars. Since it is one long, run-on sentence, the exemption would seem to apply to the whole sentence and SS/AH.

fredjohnston · 12-05-2019, 09:41 PM

I maybe wrong but haven't the big block Mopar stocker guys been doing this since the Edelbrock head was allowed?

Bryan Worner · 12-06-2019, 07:27 AM

Quote:

Originally Posted by James L Miller

" External modifications prohibited except for the following, intake side of head may be +/- 2 degrees from OEM angle between combustion chamber surface to intake flange surface, may not be cut into any part of valve-cover fastener holes (except for SS/AH). Intake manifold fastener holes must remain unaltered in their original location. Only OEM intake fastener holes are permitted, any additional fastener holes are prohibited. Spacer plates between intake manifold and cylinder head prohibited. Valve-cover fastener holes must remain unaltered and in their original location."

So, does the angle rule get exempted for the SS/AH cars, or is that just for the "valve-cover fastener holes"? It's not entirely clear to me for those cars. Since it is one long, run-on sentence, the exemption would seem to apply to the whole sentence and SS/AH.

The intake manifold fastener hole lines have been deleted.

Larry Hill · 12-06-2019, 07:38 AM

No spacer plates on my Edelbrock heads, paper gaskets and valley pan.

12-05-2019, 09:00 PM	#1
James L Miller Member Join Date: Apr 2005 Posts: 494 Likes: 6 Liked 25 Times in 16 Posts	Re: NHRA 2020 Rule Amendment SS Intakes??? " External modifications prohibited except for the following, intake side of head may be +/- 2 degrees from OEM angle between combustion chamber surface to intake flange surface, may not be cut into any part of valve-cover fastener holes (except for SS/AH). Intake manifold fastener holes must remain unaltered in their original location. Only OEM intake fastener holes are permitted, any additional fastener holes are prohibited. Spacer plates between intake manifold and cylinder head prohibited. Valve-cover fastener holes must remain unaltered and in their original location." So, does the angle rule get exempted for the SS/AH cars, or is that just for the "valve-cover fastener holes"? It's not entirely clear to me for those cars. Since it is one long, run-on sentence, the exemption would seem to apply to the whole sentence and SS/AH. __________________ Mopar 2 Ya!

12-05-2019, 09:41 PM	#2
fredjohnston Member Join Date: Jul 2007 Posts: 341 Likes: 0 Liked 55 Times in 14 Posts	Re: NHRA 2020 Rule Amendment SS Intakes??? I maybe wrong but haven't the big block Mopar stocker guys been doing this since the Edelbrock head was allowed?

12-06-2019, 07:38 AM	#4
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,642 Likes: 1,940 Liked 10,721 Times in 2,232 Posts	Re: NHRA 2020 Rule Amendment SS Intakes??? No spacer plates on my Edelbrock heads, paper gaskets and valley pan. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

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