Thoughts on accepted aftermarket heads for 350?

FLEMING · 02-21-2018, 01:52 PM

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

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

Is/are the runner volumes going to be an issue.
Terry K

FLEMING · 02-21-2018, 03:13 PM

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

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

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

Quote:

Originally Posted by rick winchester

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

The Edlebrock heads are 185 cc’s on the intake runner. Who approves this stuff?

02-21-2018, 10:09 PM

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

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.

02-21-2018, 01:52 PM	#1
FLEMING Member Join Date: Aug 2003 Posts: 261 Likes: 44 Liked 54 Times in 25 Posts	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?

02-21-2018, 03:00 PM	#2
Bobby Lundholm Member Join Date: Dec 2006 Location: Charlevoix, MI Posts: 450 Likes: 110 Liked 119 Times in 47 Posts	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. __________________ Bobby Lundholm 3516 G/SA

02-21-2018, 03:10 PM	#3
terry1 Member Join Date: Sep 2006 Location: Moncton, N.B. Posts: 276 Likes: 24 Liked 24 Times in 13 Posts	Re: Thoughts on accepted aftermarket heads for 350? Is/are the runner volumes going to be an issue. Terry K

02-21-2018, 03:13 PM	#4
FLEMING Member Join Date: Aug 2003 Posts: 261 Likes: 44 Liked 54 Times in 25 Posts	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

02-21-2018, 03:35 PM	#5
Bobby Lundholm Member Join Date: Dec 2006 Location: Charlevoix, MI Posts: 450 Likes: 110 Liked 119 Times in 47 Posts	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. __________________ Bobby Lundholm 3516 G/SA

02-21-2018, 03:38 PM	#6
rick winchester Member Join Date: Mar 2003 Location: cincinnati ohio Posts: 208 Likes: 298 Liked 195 Times in 33 Posts	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. __________________ Rick Winchester Stk 3277

02-21-2018, 09:29 PM	#8
Greg Hill VIP Member Join Date: May 2006 Location: Louisville , KY Posts: 1,995 Likes: 68 Liked 279 Times in 68 Posts	Re: Thoughts on accepted aftermarket heads for 350? The Edlebrock heads are 185 cc’s on the intake runner. Who approves this stuff? __________________ Greg Hill 4171 STK

02-21-2018, 10:09 PM	#9
Todd Hoven Guest Posts: n/a	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.

02-21-2018, 10:52 PM	#10
5389stk Junior Member Join Date: Aug 2013 Posts: 28 Likes: 0 Liked 72 Times in 6 Posts	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.