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Old 02-22-2018, 02:52 PM   #31
Bobby Lundholm
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Default Re: Thoughts on accepted aftermarket heads for 350?

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Originally Posted by 5389stk View Post
Stock runner must be same size as head it is replacing. According to stock head cc guide sub notes on replacement heads
That's what the question is on how to get there without it being illegal.
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Old 02-22-2018, 02:58 PM   #32
terry1
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Smile Re: Thoughts on accepted aftermarket heads for 350?

I figured that that would be the case.
So, if I have a set of aluminum heads that are 168 CC's on the intake;
that says that NHAR does not care how it is done as long as it is
"stock in appearance"!
That says to me that NHRA are saying "go at it boys" and see how good
you are!
Terry K
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Old 02-22-2018, 03:10 PM   #33
Bobby Lundholm
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Default Re: Thoughts on accepted aftermarket heads for 350?

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Originally Posted by terry1 View Post
I figured that that would be the case.
So, if I have a set of aluminum heads that are 168 CC's on the intake;
that says that NHAR does not care how it is done as long as it is
"stock in appearance"!
That says to me that NHRA are saying "go at it boys" and see how good
you are!
Terry K
Right or run it as it is with the 185cc runners. Either way it's technically illegal.
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Old 02-22-2018, 03:25 PM   #34
Mark Faul
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Default Re: Thoughts on accepted aftermarket heads for 350?

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Originally Posted by Chris Hardy View Post
Wouldn't it be easier for everyone, if NHRA just calls it: Every SBC head must be Less than or equal to 185CC's, have stock diameter valves? Then they just inspect for grinding and pour? We all make a ton of power, and inspection is easy. (FYI, the pinch cross section on the Dart 185cc heads are smaller than the stock intake manifold cross section) Thus, the heads will be a substantial gain once a good valve job and flowing is completed.
They already have a class where they pour the heads and have stock valve diameter. It's called Super Stock.
Sure glad I decided to quit running Stock. Getting more screwed up every year...
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Old 02-22-2018, 04:25 PM   #35
Dan Fahey
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Default Re: Thoughts on accepted aftermarket heads for 350?

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Originally Posted by Mark Faul View Post
They already have a class where they pour the heads and have stock valve diameter. It's called Super Stock.
Sure glad I decided to quit running Stock. Getting more screwed up every year...

Holy Crate Motor Batman !!

We just had this conversation.

D
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Old 02-22-2018, 06:57 PM   #36
Barry Polley
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Default Re: Thoughts on accepted aftermarket heads for 350?

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Originally Posted by Mark Faul View Post
They already have a class where they pour the heads and have stock valve diameter. It's called Super Stock.
Sure glad I decided to quit running Stock. Getting more screwed up every year...

My partner Jeff said; its like comp 25 years ago!
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Old 02-23-2018, 05:31 AM   #37
FLEMING
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Default Re: Thoughts on accepted aftermarket heads for 350?

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Originally Posted by Greg Hill View Post
The Edlebrock heads are 185 cc’s on the intake runner. Who approves this stuff?

I saw that! I think i will just look for some 993 I just want to fix a legal motor lol
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