Go Back  Offshoreonly.com > Technical > General Q & A
Best aluminum head? >

Best aluminum head?

Notices

Best aluminum head?

Old 08-31-2015, 03:15 PM
  #1  
Registered
Thread Starter
 
bigboat28's Avatar
 
Join Date: Dec 2004
Location: Ohio
Posts: 4,017
Received 103 Likes on 75 Posts
Default Best aluminum head?

What is the best aluminum head, dart or afr or other and why? They are going on hp500s possibly stroked to 540s?
bigboat28 is offline  
Old 08-31-2015, 03:22 PM
  #2  
Registered
iTrader: (3)
 
Join Date: Jul 2012
Location: indianapolis
Posts: 1,248
Likes: 0
Received 2 Likes on 2 Posts
Default

Here we go!!
indysupra is offline  
Old 08-31-2015, 03:47 PM
  #3  
Platinum Member
Platinum Member
iTrader: (6)
 
F-2 Speedy's Avatar
 
Join Date: May 2012
Location: Midwest & T-Rock
Posts: 10,388
Received 3,029 Likes on 1,347 Posts
Default

I think they all flow about the same AFR, Dart, Brodix depending on runner and valve size, I think it boils down to preference and budget

Edit: buy them bare and have an experienced builder put them together to match the cam and other valve train components, jmo

Edit: there's a few threads about this
F-2 Speedy is offline  
Old 08-31-2015, 04:18 PM
  #4  
GPM
Registered
 
Join Date: Mar 2004
Location: Pa
Posts: 2,653
Received 78 Likes on 56 Posts
Default

Best price, best quality, best performance, A little more info on how you're going to use them may help
GPM is offline  
Old 08-31-2015, 04:29 PM
  #5  
Registered
 
Join Date: Mar 2010
Location: starke fl
Posts: 213
Received 4 Likes on 4 Posts
Default

PRO COMP
blaquebaja is offline  
Old 08-31-2015, 05:08 PM
  #6  
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 13,520
Received 3,090 Likes on 1,392 Posts
Default

300 Magnum kicked some butt in this half way recent BBC head shoot out:
http://www.superchevy.com/how-to/pro...ut-the-o-vs-r/
SB is offline  
Old 08-31-2015, 05:33 PM
  #7  
Registered
iTrader: (3)
 
Join Date: Jul 2004
Location: chicago
Posts: 11,332
Received 71 Likes on 39 Posts
Default

Originally Posted by SB
300 Magnum kicked some butt in this half way recent BBC head shoot out:
http://www.superchevy.com/how-to/pro...ut-the-o-vs-r/
Even more interesting to me, is how pretty much all the heads, kicked the GM iron heads butt by a landslide. Also interesting, was the grossly oversized 355 edelbrock, and 360cc trick flows, were still able to maintain some respectable avg and peak torque numbers. If someone on oso said they were going to put a 355 edelbrock E cnc head, or 360cc trick flow, on a 496ci marine "stroker", they would be slapped right thru the computer screen!

Looks like the 4 heads, with CNC porting, were all close to each other power wise. The AFR and edelbrock did have one advantage, with their smaller chambers, probably bumping the compression .75 higher than the dart 335 head, that only made 12HP less, and 20ftlbs less than the afr.

That E-CNC 355 head, looks like it did pretty well. Probably would be a killer head on a 572ci setup. For 1000 bucks a piece bare, fully CNC ported, that seems like a good casting to assemble.

Last edited by MILD THUNDER; 08-31-2015 at 05:38 PM.
MILD THUNDER is offline  
Old 08-31-2015, 06:19 PM
  #8  
SB
Registered
iTrader: (1)
 
Join Date: Nov 2004
Location: On A Dirt Floor
Posts: 13,520
Received 3,090 Likes on 1,392 Posts
Default

Take a look at Brodix's newer BB-3 Xtra O 332cc CNC head:
http://www.brodix.com/heads/big-bloc...a-o-exhaust-2/
Then click on "Flow Chart."

That's got a marine 540+cid all over it !
SB is offline  
Old 08-31-2015, 08:42 PM
  #9  
Registered
 
Join Date: Jan 2006
Location: taxachusetts
Posts: 3,077
Received 674 Likes on 343 Posts
Default

Originally Posted by SB
Take a look at Brodix's newer BB-3 Xtra O 332cc CNC head:
http://www.brodix.com/heads/big-bloc...a-o-exhaust-2/
Then click on "Flow Chart."

That's got a marine 540+cid all over it !
the 50° intake valve angle may be a little problematic.wonder if they can give a 45° valve seat.
sutphen 30 is offline  
Old 09-02-2015, 02:59 PM
  #10  
Platinum Member
Platinum Member
iTrader: (1)
 
14 apache's Avatar
 
Join Date: Apr 2005
Location: Northport N.Y.
Posts: 2,139
Received 10 Likes on 10 Posts
Default

Originally Posted by sutphen 30
the 50° intake valve angle may be a little problematic.wonder if they can give a 45° valve seat.
You can order it any way you want it. probably a few extra weeks.
14 apache is offline  

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.