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-   -   Thoughts on accepted aftermarket heads for 350? (https://classracer.com/classforum/showthread.php?t=69084)

FLEMING 02-21-2018 01:52 PM

Thoughts on accepted aftermarket heads for 350?
 
I noticed there are accpeted RHS, Dart and Edelbroc heads for my combination.. What is everyones thought on going this route?

Bobby Lundholm 02-21-2018 03:00 PM

Re: Thoughts on accepted aftermarket heads for 350?
 
I was looking at them and the Dart look to be the best without going to the aluminum heads. We already found quite a pick up over the stock castings.

terry1 02-21-2018 03:10 PM

Re: Thoughts on accepted aftermarket heads for 350?
 
Is/are the runner volumes going to be an issue.
Terry K

FLEMING 02-21-2018 03:13 PM

Re: Thoughts on accepted aftermarket heads for 350?
 
I was told you have to add 50# if you run them.. Just getting hard to find good cores for certain heads.. Mainly wondering if anyone went that route yet

Bobby Lundholm 02-21-2018 03:35 PM

Re: Thoughts on accepted aftermarket heads for 350?
 
I haven't heard anything about the runners yet. It depends on what class you run for the weight to be added. It's a 5 hp penalty across the board.

rick winchester 02-21-2018 03:38 PM

Re: Thoughts on accepted aftermarket heads for 350?
 
Unless you are running Super stock and filling the ports none of these heads are going to meet the port cc. numbers. You just cannot mill enough off get from 175 to 161 cc . I know they are showing 172 cc but check 174/175 cc. Rick.

Bobby Lundholm 02-21-2018 03:43 PM

Re: Thoughts on accepted aftermarket heads for 350?
 
Quote:

Originally Posted by rick winchester (Post 556726)
Unless you are running Super stock and filling the ports none of these heads are going to meet the port cc. numbers. You just cannot mill enough off get from 175 to 161 cc . I know they are showing 172 cc but check 174/175 cc. Rick.

Then if you can't adjust the runners because that's illegal and you can't leave them as is because they have to reflect stock runner numbers how would they be able to kick you out if you are running the spec head they approved?

Greg Hill 02-21-2018 09:29 PM

Re: Thoughts on accepted aftermarket heads for 350?
 
The Edlebrock heads are 185 cc’s on the intake runner. Who approves this stuff?

Todd Hoven 02-21-2018 10:09 PM

Re: Thoughts on accepted aftermarket heads for 350?
 
Great thing about aluminum. You can weld it up, reprofile it, and cover it up. It will look like new and you probably pick up 30 hp at least. You have to do
something to keep up with the Mopars.

5389stk 02-21-2018 10:52 PM

Re: Thoughts on accepted aftermarket heads for 350?
 
Question who actually submitted all these heads to NHRA or did NHRA pick them out. All these heads cc way to big to be used in stock.


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