NHRA 2020 Rule Amendment SS Intakes??? - Page 2

Crew Chief · 12-05-2019, 06:11 PM

As it was just explained to me, the new rule applies to those who have an angled spacer plate being used to replace material that has been cut off at an angle on the intake side of the head. They will also be looking for the OEM angle between the intake side of the head and the block side of the head. That is what the +/- 2 degree allowance is about.

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.

Bryan Worner · 12-07-2019, 03:55 PM

Quote:

Originally Posted by SSDiv6

Was just looking at the new NHRA 2020 Rule Book amendment prohibiting spacers between the intake and the cylinder head.

They already allow sheet metal intakes and also two piece intake manifolds split in the middle in the class so what is the difference in having a spacer between the intake and cylinder head?

This will effect many cars including Mopar 383 with Chevy intakes, Ford FE with 351C intakes and AMC with Mopar intakes running spacers to fit these intakes.

Mopar 383’s with Chevy intakes???? Shouldn’t Mopars run Mopar intakes? Shouldn’t Fords run Ford intakes? How many Chevys run Mopar or Ford intakes? Doesn’t Edelbrock make intakes for Ford and Mopar??? In Super Stock, isn’t the engine combination supposed to match the make of the car? If it didn’t before, I guess it does now, huh!!!

james schaechter · 12-07-2019, 04:05 PM

Quote:

Originally Posted by Bryan Worner

Mopar 383’s with Chevy intakes???? Shouldn’t Mopars run Mopar intakes? Shouldn’t Fords run Ford intakes? How many Chevys run Mopar or Ford intakes? Doesn’t Edelbrock make intakes for Ford and Mopar??? In Super Stock, isn’t the engine combination supposed to match the make of the car? If it didn’t before, I guess it does now, huh!!!

Why would that matter when sheet metal fab intakes are legal?

Lee Valentine · 12-07-2019, 04:35 PM

Any intake manifold,don't screw with the intake surface of the head is how I understand it. Years ago when John Gunn was torn down NHRA wanted to look at his manifold and he told them no I'm allowed any intake and locked it in the trunk. He said you're not going to look at it and tell all your friends,he got the record and never showed the inside of the manifold.

Jeff Niceswanger · 12-07-2019, 05:29 PM

Quote:

Originally Posted by Bryan Worner

Mopar 383’s with Chevy intakes???? Shouldn’t Mopars run Mopar intakes? Shouldn’t Fords run Ford intakes? How many Chevys run Mopar or Ford intakes? Doesn’t Edelbrock make intakes for Ford and Mopar??? In Super Stock, isn’t the engine combination supposed to match the make of the car? If it didn’t before, I guess it does now, huh!!!

I don't think any racing style aftermarket manifolds were made for Cadillacs. Ken Sharp come to mind.

jmcarter · 12-07-2019, 06:03 PM

Quote:

Originally Posted by Jeff Niceswanger

I don't think any racing style aftermarket manifolds were made for Cadillacs. Ken Sharp come to mind.

...or Bob Dennis.

12-05-2019, 06:11 PM	#11
Crew Chief Member Join Date: Jun 2003 Posts: 184 Likes: 0 Liked 10 Times in 6 Posts	Re: NHRA 2020 Rule Amendment SS Intakes??? As it was just explained to me, the new rule applies to those who have an angled spacer plate being used to replace material that has been cut off at an angle on the intake side of the head. They will also be looking for the OEM angle between the intake side of the head and the block side of the head. That is what the +/- 2 degree allowance is about.

12-05-2019, 09:00 PM	#12
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	#13
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	#15
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,629 Likes: 1,923 Liked 10,682 Times in 2,222 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

12-07-2019, 04:35 PM	#18
Lee Valentine Senior Member Join Date: May 2004 Location: Brookfield, CT Posts: 708 Likes: 13 Liked 319 Times in 68 Posts	Re: NHRA 2020 Rule Amendment SS Intakes??? Any intake manifold,don't screw with the intake surface of the head is how I understand it. Years ago when John Gunn was torn down NHRA wanted to look at his manifold and he told them no I'm allowed any intake and locked it in the trunk. He said you're not going to look at it and tell all your friends,he got the record and never showed the inside of the manifold. __________________ Lee Valentine 1661 STK