gt40 info...
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From: Des Moines, Iowa
gt40 info...
Hey all,
I am going yarding soon for some friends and I am still on the prowl for good parts that will improve my 351w power. I remember talking about this a while back and know that early 5.0 Explorers have GT40 heads but was wondering what actual years??? And how to make sure I get the right ones??? Casting numbers or ????
Thanks in advance!
Nathan
I am going yarding soon for some friends and I am still on the prowl for good parts that will improve my 351w power. I remember talking about this a while back and know that early 5.0 Explorers have GT40 heads but was wondering what actual years??? And how to make sure I get the right ones??? Casting numbers or ????
Thanks in advance!
Nathan
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I think is 96-97 on the explorers that have the gt 40 , the newer were gt 40p , but you could buy the gt 40s from ford racing in the 80s- 90s , so they were easy to come buy , you could check craigs list , alot of mustang guys were using them....Lew
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From: Des Moines, Iowa
already used crazedlist.org : search craigslist like a madman and checked all the craigslist postings in iowa... not much to be had... lots of gt40p heads out there... 
I'm hoping to find a explorer with engine problems that I can steal the heads off localy or if I happen to see one in the JY I can buy heads there for $20each... $40 for gt40s wouldn't be so bad!!!!
I'm hoping to find a explorer with engine problems that I can steal the heads off localy or if I happen to see one in the JY I can buy heads there for $20each... $40 for gt40s wouldn't be so bad!!!!
Post Fiend
Joined: Mar 2002
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From: Bonita Springs FL
Conanski says that spending more than about $500 total, including purchase price, on a set of GT40 heads is not cost effective because you can buy aftermarket heads that flow even better for about that much.
He also has a chart (I've seen it before, but can't find it right now) that explains what heads came in which vehicles, and which casting numbers to look out for.
He also has a chart (I've seen it before, but can't find it right now) that explains what heads came in which vehicles, and which casting numbers to look out for.
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
Here's the chart for stock Ford heads..
And here's a chart showing the relative flow numbers for the stock and most common aftermarket heads. The basic Edelbrock Performer head is listed in the bottom left corner as "Edelbrock 1.90" and the numbers don't do it justice.. these things flow about 50% better than E7s and also have a fairly big advantage over GT40s on the exhaust side, and they're often discarded by stangers that have upgraded to TrickFlows or AFRs and can be bought cheap on the used market.
And here's a chart showing the relative flow numbers for the stock and most common aftermarket heads. The basic Edelbrock Performer head is listed in the bottom left corner as "Edelbrock 1.90" and the numbers don't do it justice.. these things flow about 50% better than E7s and also have a fairly big advantage over GT40s on the exhaust side, and they're often discarded by stangers that have upgraded to TrickFlows or AFRs and can be bought cheap on the used market.
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From: Des Moines, Iowa
thanks guys...
I have a set of rebuilt e7's sitting on the floor next to the 351w that is (YES still!) on the engine stand. After I decided not to put a $1500 rebuild back into a $300 crapper truck... I left the heads off and front of the motor stripped down just in case it goes into a MAF truck I can put a better cam in it.
Just a little while back Paul told me that gt40s and a crane 444232 would work under a SD powered system. So I decided to do some looking for better heads. B/C at this point it would be pointless to spend all this time looking for a decent truck to put this motor into and not go the extra mile to put the right cam and better heads on.
Which leads me to the question will the eddy performers work with SD paul???
I have a set of rebuilt e7's sitting on the floor next to the 351w that is (YES still!) on the engine stand. After I decided not to put a $1500 rebuild back into a $300 crapper truck... I left the heads off and front of the motor stripped down just in case it goes into a MAF truck I can put a better cam in it.
Just a little while back Paul told me that gt40s and a crane 444232 would work under a SD powered system. So I decided to do some looking for better heads. B/C at this point it would be pointless to spend all this time looking for a decent truck to put this motor into and not go the extra mile to put the right cam and better heads on.
Which leads me to the question will the eddy performers work with SD paul???
FTE Legend
Joined: Jun 2006
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From: Ottawa, Ontario
You could pretty much use any head you want with SD its the cam that has a bigger impact... though the more air the motor flows overall the more difficulty the computer will have supplying the correct amount of fuel for all loads and rpms. That said with a relatively mild cam like the Crane 444232 I don't see the Edelbrocks causing any major problems.
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From: Des Moines, Iowa
hmmm... Well I might look for some eddy's then...
I'm guessing by the time I find some gt40s and have all the machine work done I'll already be looking at $300-$400 pretty easily...
Any good ideas on where to find a good used pair of performers?
I'm guessing by the time I find some gt40s and have all the machine work done I'll already be looking at $300-$400 pretty easily...
Any good ideas on where to find a good used pair of performers?
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From: Ottawa, Ontario
Check the local classifieds and also look into some of those CNC ported E7's.. that's what those Power Heads are in the chart above... they essentialy match what the Edelbrocks do, and Thumper Performance also sells a comparable product for those on the east coast.
http://www.hunterstyle.com/thumper/index.php
http://www.powerheads.com/cylinderheads.html
http://www.hunterstyle.com/thumper/index.php
http://www.powerheads.com/cylinderheads.html
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From: Des Moines, Iowa
CNC ported e7s you say... hmm...
read the thumper web site... he's more expensive than to get a set of gt40s and have them rebuilt at my machine shop...
With the numbers he's reporting I am wondering what kind of power the rebuilt E7's that I have will make with my own P&P job.?.?.? I can p&p my e7 heads that I have now for free since I have everything. How much HP will I be gaining by getting GT40s or Performers over a set of P&Ped e7's???
I realize spending more $$$ on cnc porting or getting gt40/performer heads will give me more power but at what cost???
E7'S: $600-$900 for cnc porting + shipping from iowa to FL or CA??? No thanks I'll by performers, or gt40's and machine them here for $300-$400 total.
I'll look around and see what I can find and what it will cost me VS the power I will ultimatly gain from the money I spend.
read the thumper web site... he's more expensive than to get a set of gt40s and have them rebuilt at my machine shop...
With the numbers he's reporting I am wondering what kind of power the rebuilt E7's that I have will make with my own P&P job.?.?.? I can p&p my e7 heads that I have now for free since I have everything. How much HP will I be gaining by getting GT40s or Performers over a set of P&Ped e7's???
I realize spending more $$$ on cnc porting or getting gt40/performer heads will give me more power but at what cost???
E7'S: $600-$900 for cnc porting + shipping from iowa to FL or CA??? No thanks I'll by performers, or gt40's and machine them here for $300-$400 total.
I'll look around and see what I can find and what it will cost me VS the power I will ultimatly gain from the money I spend.
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From: Des Moines, Iowa
well i bought a P&P kit from eastwood and have 2 pneumatic die grinders... so I could do the E7's if i choose to... I bought the kit knowing that some day soon I will be doing a P&P on the 300 I6 head since there are zero aftermarket options for them...
where is you guy located???
where is you guy located???
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