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Old 02-21-2018, 11:52 AM   #1
FLEMING
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Default 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?
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Old 02-21-2018, 01:00 PM   #2
Bobby Lundholm
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Default 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.
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Old 02-21-2018, 01:10 PM   #3
terry1
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Smile Re: Thoughts on accepted aftermarket heads for 350?

Is/are the runner volumes going to be an issue.
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Old 02-21-2018, 01:13 PM   #4
FLEMING
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Default 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
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Old 02-21-2018, 01:35 PM   #5
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Default 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.
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Old 02-21-2018, 01:38 PM   #6
rick winchester
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Default 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.
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Old 02-21-2018, 01:43 PM   #7
Bobby Lundholm
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Default Re: Thoughts on accepted aftermarket heads for 350?

Quote:
Originally Posted by rick winchester View Post
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?
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Old 02-21-2018, 07:29 PM   #8
Greg Hill
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Default Re: Thoughts on accepted aftermarket heads for 350?

The Edlebrock heads are 185 cc’s on the intake runner. Who approves this stuff?
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Old 02-21-2018, 08:09 PM   #9
Todd Hoven
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Default 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.
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Old 02-21-2018, 08:52 PM   #10
5389stk
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Default 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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