350/360/330 SBC with E-brock heads - CRICKETS

[Bob Mulry]

I asked this question on another thread a few days back and nobody responded.....So I will try again as a new thread....
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I'm an Old Guy, so help me out....

I looked up the e-Brock specs on these NHRA replacement heads.

I found that 3 of the part numbers had Intake Runner Volumes of 185cc..

I found that 1 of the part numbers had an Intake Runner Volume of 170cc.

I noticed that in the tech specs that the Intake Runner Volume of all of the Factory Cast Iron Heads have an Intake Runner Volume of 165cc..

The e-Brock heads I believe are SS only because they would have to be filled and ported out to size, which is legal in SS but not in Stock.

What did I miss??????

Thanx.

[Tim H]

I think you are answering your own question, if I am understanding your post correctly. The Edelbrock would only be legal for S/S because of the larger port size and the restriction of no porting or port mods in Stock.

[RULER]

This question has been asked to NHRA and the answer was you have to cut the intake side to get the CC right. I don’t think it can be done unless you angle mill and I think we know that answer

[Bob Mulry]

Originally Posted by Tim H

I think you are answering your own question, if I am understanding your post correctly. The Edelbrock would only be legal for S/S because of the larger port size and the restriction of no porting or port mods in Stock.

It's listed as a Replacement Head for Stock in the Classification Guide????

[Race Clean]

Originally Posted by Bob Mulry

I asked this question on another thread a few days back and nobody responded.....So I will try again as a new thread....
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I think if it had for been another make of Car you would have gotten a lot more opinions

[james schaechter]

Originally Posted by RULER

This question has been asked to NHRA and the answer was you have to cut the intake side to get the CC right. I don’t think it can be done unless you angle mill and I think we know that answer

Yeah and put some of the magic wedge thingys in there. 😎

[Bob Mulry]

Originally Posted by james schaechter

Yeah and put some of the magic wedge thingys in there. 😎

OK....

I forgot wedgies are back in......

It's still gotta be tough staying out of the bolt holes...

Thanx

[Greg Hill]

I’ve been waiting for someone to show up with these heads in stock. 185 cc’s on the intake side. Who is brave enough. According to the blueprint specs they are legal but the only way you could get to the right cc’s would be to weld them up and port them.

[Alan Nyhus]

Here's the answer I got from multiple sources at NHRA Technical:

"If you show up with them on a Stocker, you'll be bounced because we know the ports are over the c.c. limit. If we check them and they come up correct, you'll be bounced because we know you've welded them."

I asked why they were still shown as a replacement head for Stock and only one person gave me an answer: "They shouldn't be."

Catch 22.....

[Robert Simpson]

Originally Posted by Alan Nyhus

Here's the answer I got from multiple sources at NHRA Technical:

"If you show up with them on a Stocker, you'll be bounced because we know the ports are over the c.c. limit. If we check them and they come up correct, you'll be bounced because we know you've welded them."

I asked why they were still shown as a replacement head for Stock and only one person gave me an answer: "They shouldn't be."

Catch 22.....

Well then I know of several stockers that have these heads (Non Chevy) and I know the heads were produced larger than stock. They were told, "by tech", they have to be X cc's so they did what they had to do to make them legal size. I don't believe NHRA will look properly at these heads in all divisions... Crazy.