Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

bang for the buck heads?

Thread Tools
 
Search this Thread
 
Old 02-22-2009, 11:17 PM
  #1  
dirtydave289
3rd Gear Member
Thread Starter
 
dirtydave289's Avatar
 
Join Date: Sep 2007
Location: Newnan, GA
Posts: 586
Default bang for the buck heads?

I'm looking to make some more power with my 289
it already has a 4160 600cfm carb, weiand 8011 intake, elect. ignition, long tubes, and a mild cam (not sure on specs)
so i figure next i'll buy heads for it..but looking around there are so many to choose from and i'm not really sure which ones to stay away from. what are some decent heads? (that are hopefully on the less expensive side of the market) i'm not really looking to get the best out there, just a decent upgrade from the stock heads
thanks!
dirtydave289 is offline  
Old 02-22-2009, 11:20 PM
  #2  
nba1341
4th Gear Member
 
nba1341's Avatar
 
Join Date: Jun 2006
Location: Upland, California
Posts: 1,246
Default

gt40s maybe.......
nba1341 is offline  
Old 02-22-2009, 11:35 PM
  #3  
racin66coupe
5th Gear Member
 
racin66coupe's Avatar
 
Join Date: Dec 2007
Location: NH
Posts: 3,485
Default

+1 gt-40s
racin66coupe is offline  
Old 02-22-2009, 11:43 PM
  #4  
dirtydave289
3rd Gear Member
Thread Starter
 
dirtydave289's Avatar
 
Join Date: Sep 2007
Location: Newnan, GA
Posts: 586
Default

what's the difference between gt40p's and gt40s again? something about spark plugs?
dirtydave289 is offline  
Old 02-23-2009, 12:27 AM
  #5  
nba1341
4th Gear Member
 
nba1341's Avatar
 
Join Date: Jun 2006
Location: Upland, California
Posts: 1,246
Default

Originally Posted by dirtydave289
what's the difference between gt40p's and gt40s again? something about spark plugs?
gt40p's requires you to use special headers with them


there used to be a great site with all the info and it even gave peoples 1/4 times upgrading from stocker heads but the site is gone now
nba1341 is offline  
Old 02-23-2009, 12:35 AM
  #6  
rgautomotive
 
rgautomotive's Avatar
 
Join Date: Dec 2008
Location: Tennessee
Posts: 23
Default

afr 165's. By the time you buy some gt-40's unless you can find some that are fresh from the machine shop and aren't using grab from a barrell parts you will be ahead with afr's.
rgautomotive is offline  
Old 02-23-2009, 12:36 AM
  #7  
nba1341
4th Gear Member
 
nba1341's Avatar
 
Join Date: Jun 2006
Location: Upland, California
Posts: 1,246
Default

Originally Posted by rgautomotive
afr 165's. By the time you buy some gt-40's unless you can find some that are fresh from the machine shop and aren't using grab from a barrell parts you will be ahead with afr's.

don't you need to get different valve springs with afrs or like you have to do something else besides just install those complete heads?
nba1341 is offline  
Old 02-23-2009, 01:22 AM
  #8  
Adrenolin
5th Gear Member
 
Adrenolin's Avatar
 
Join Date: Aug 2007
Location: Delaware(US) & Nova Scotia(Canada)
Posts: 2,035
Default

Could add a set of Edelbrock Performer RPM heads complete/assembled for about 1200.00 new from summit, jegs, etc in natural aluminum or a bit more for polished. Cheaper then the AFRs however much better then the stock heads. I can see the GT40s being a cheaper alternative however as stated your more then likely have machine shop costs on top of it. Personally I'd rather the new product thats ready out-of-the-box for use.
Adrenolin is offline  
Old 02-23-2009, 01:38 AM
  #9  
Silverblade
2nd Gear Member
 
Silverblade's Avatar
 
Join Date: Dec 2008
Location: British Columbia
Posts: 262
Default

I am hesitant to post this, as I do not want to hijack the thread, but I feel it may help him if he plans on a junkyard upgrade.

gt40 vs stock 351W heads, what is a better bolt on from the junkyard head for a 289?
Silverblade is offline  
Old 02-23-2009, 02:38 AM
  #10  
Starfury
6th Gear Member
 
Starfury's Avatar
 
Join Date: Aug 2007
Location: Elk Grove, CA
Posts: 5,896
Default

GT40's. They use 351W port castings, but have smaller combustion chambers for decent compression. It's almost impossible to find small-chamber 351W heads in a junkyard anymore.
Starfury is offline  


Quick Reply: bang for the buck heads?



All times are GMT -5. The time now is 01:56 PM.