NHRA 2020 Rule Amendment SS Intakes???

bert powell · 01-30-2020, 10:23 AM

Who is going to be the first to take a bbc oval port head and mill 1" off the intake flange of head below the valve cover bolts? Should gain 50-60cc to open up the port.

bykr · 01-30-2020, 01:17 PM

Quote:

Originally Posted by bert powell

Who is going to be the first to take a bbc oval port head and mill 1" off the intake flange of head below the valve cover bolts? Should gain 50-60cc to open up the port.

Yeah, after the crying, NHRA backing down leaves the door open for more "innovation".

bubski · 01-30-2020, 05:03 PM

Quote:

Originally Posted by bykr

Yeah, after the crying, NHRA backing down leaves the door open for more "innovation".

Once again the "innovators" get there way !! Break out the 85b n mill away !! Can anyone guess whats next to come down the road ??

Tom Broome · 01-31-2020, 09:27 AM

Quote:

Originally Posted by bubski

Once again the "innovators" get there way !! Break out the 85b n mill away !! Can anyone guess whats next to come down the road ??

Valve seat replacement is legal now. Chamber modification is legal now. Combine the two options.

That's all I'm allowed to say.

SSDiv6 · 01-30-2020, 02:49 PM

Quote:

Originally Posted by bert powell

Who is going to be the first to take a bbc oval port head and mill 1" off the intake flange of head below the valve cover bolts? Should gain 50-60cc to open up the port.

Bert,
Do you even know what you are talking about?
Gain 50 to 60 cc's when the rules allow you to port, epoxy and epoxy the cylinder heads?

Joey Bohannon · 01-30-2020, 02:58 PM

Bert knows exactly what he is talking about! If they cc without the spacer plate there is a ton to gain. And if there wasn't gains to be had in port volume, then why do they make'm. Air speed can still be retained with more volume.

SSDiv6 · 01-30-2020, 03:40 PM

Quote:

Originally Posted by Joey Bohannon

Bert knows exactly what he is talking about! If they cc without the spacer plate there is a ton to gain. And if there wasn't gains to be had in port volume, then why do they make'm. Air speed can still be retained with more volume.

It is measured without the spacer and not all engines use a spacer. There is a lot more to to volume to make power with cylinder heads.

bykr · 01-30-2020, 10:32 PM

Quote:

Originally Posted by SSDiv6

It is measured without the spacer and not all engines use a spacer. There is a lot more to to volume to make power with cylinder heads.

You just don't get it. So why do you think they're doing this? The guy that was doing it obviously thought it had an effect.

nhramnl · 01-30-2020, 05:27 PM

Quote:

Originally Posted by Joey Bohannon

Bert knows exactly what he is talking about! If they cc without the spacer plate there is a ton to gain. And if there wasn't gains to be had in port volume, then why do they make'm. Air speed can still be retained with more volume.

Joey and Bert are correct. This is EXACTLY what Westcott did to build the monsters he and his dad ran in SS/AH.

l88427 · 01-30-2020, 10:01 PM

Quote:

Originally Posted by nhramnl

Joey and Bert are correct. This is EXACTLY what Westcott did to build the monsters he and his dad ran in SS/AH.

Don't think so,Wescotts heads don't use plates and still retain the valve cover bolt holes...

01-30-2020, 10:23 AM	#1
bert powell Member Join Date: Jul 2002 Posts: 243 Likes: 36 Liked 34 Times in 12 Posts	Re: NHRA 2020 Rule Amendment SS Intakes??? Who is going to be the first to take a bbc oval port head and mill 1" off the intake flange of head below the valve cover bolts? Should gain 50-60cc to open up the port.

01-30-2020, 02:58 PM	#6
Joey Bohannon Member Join Date: Jul 2002 Posts: 102 Likes: 1 Liked 61 Times in 22 Posts	Re: NHRA 2020 Rule Amendment SS Intakes??? Bert knows exactly what he is talking about! If they cc without the spacer plate there is a ton to gain. And if there wasn't gains to be had in port volume, then why do they make'm. Air speed can still be retained with more volume. Last edited by Joey Bohannon; 01-30-2020 at 03:04 PM.