GT40 heads to buy ???

lakefrontlivin

New Member
Nov 26, 2009
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HI,
I found these heads for sale locally.. Would they be a good upgrade for my stock 5.0 GT ? i have a set of gt40 heads with a three angle valve job port polished with comp cam valve springs with ford racing aluminum roller rockers and arp head bolts had on my mustang for 3 months asking $400 Would I just be able to bolt these on or do I have to change anything else? Thanx Tom
 
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maybe this route???

I Also found these for $550.. I think that I will go this route ??? I HAVE A SET OF GT-40 HEADS THAT ARE COMPLETELY REBUILT WITH MANLEY VALVES AND COMP CAMS SPRINGS NEW GUIDES AND SEATS ALSO A NEW SET OF 1.7 RATIO ROLLER ROCKERS AND A SET OF SHORTY HEADERS THIS A CHEAP WAY TO WAKE UP THAT OLD FOX.... What do you guys think?? I have a lot of plans for my 95 5.0 GT but would like to do it little by little... Tom
 
HI,
I found these heads for sale locally.. Would they be a good upgrade for my stock 5.0 GT ? i have a set of gt40 heads with a three angle valve job port polished with comp cam valve springs with ford racing aluminum roller rockers and arp head bolts had on my mustang for 3 months asking $400 Would I just be able to bolt these on or do I have to change anything else? Thanx Tom


UPDATE: I guess you snooze you lose !! Called the guy with the heads for sale and they have been sold..:(
Tom
 
for that kind of money you are pretty close to used aluminum heads. gt40's were/are still great, there are just better heads to be had.

if you want a cheap upgrade, pull a set off an explorer and swap the springs for a stronger set and bolt them up. by the time you get into porting/polishing you have more into less than desireable iron heads than they are worth.
 
if you want a cheap upgrade, pull a set off an explorer and swap the springs for a stronger set and bolt them up. by the time you get into porting/polishing you have more into less than desireable iron heads than they are worth.

That's kinda the crapshoot with GT40/GT40P's

By the time you get the heads, upgrade the springs, and maybe give them a performance valve job, you are part of the way to a good set of AL heads.

But then, you start looking at the rest of your combo and say "Well, now my intake is the restriction, or now i need a new cam, and a 75mm TB"...so i still think in the long run you spend more money with AL heads just because you want to upgrade the rest of the combo to get the most for your expensive heads
 
I run gt40's b/c I practically got them for free along with the explorer intake so I didnt feel the crunch when I took them to a shop to get cleaned up. If I paid 3-400 dollars for the heads and then another 2-300 on top of that to have new guides, valves, etc... I would seriously be wondering why I didnt find a used set of AL heads in the first place. dont get me wrong, I love the heads on my car, but if I was starting from scratch and didnt have any heads yet, IMHO, just me and what totalling receipts have shown me is that it "may" be in the long run cheaper to srping a bit more for AL heads. A ported explorer intake can keep up with a good set of AL heads and wont break the bank and you'll have a stout combo that has great street manners and will haul ass on the strip. Like I said. just an observation I have made.