gt40 heads prices

I will ask $500 or best offer for my iron gt40's soon, when I take them off. Slight milling, peformance valve job, and Comp Cams springs. Going to AFR's soon, I hope. Seems like a fair price, they should only have about 500 street miles and 50 runs on them when they get ready to come off.

Be careful. If they are ready to run, they are worth more than if you have to work on them. I spent a bit over $850 on mine, including buying them, adding the spring setup, and machining.
 
Be sure you know what you're getting/asking for.

GT40 irons came on 93-95 Cobras, and on 95- early 97 Explorer/Mountaineers.

GT40P (also cast iron) came on late 97-01 Explorer/Mountaineers

GT40Y, GT40X and GT40Z are all aluminum and come aftermarket only from Ford Racing Performance Products.

There are a bunch of "GT40" heads out there.
 
Careful with the 40-p's. The header issues will have you wishing you never bothered swapping them in. I went through 3 sets before I arrived at my longtubes. Then the longtubes are now causing an interesting situation where I need to cut up my 4-cat pipe to make a midpipe from it. For $800....just get some edelbrock aluminum heads.
 
$1000 will get you some brand new edelbrock performer rpm heads from summit: EDL-60739 (EDL-77169 even cheaper victor jr's). I am almost positive I saw someone selling those heads somewhere for $800 or 850 plus I'm sure someone is selling some used ones somewhere for 2/3 of that right now on an auction or classifieds.

GT-40 P's (and this only applies to P's), by the time you buy the exhaust to use it, you're well over the cost of just getting them eddies in the first place...and then you still have iron heads.
 
A friend of mine just scored a complete Exploror motor, with GT40P heads, intake and all for a mere 400 bucks! He came accross a junk yard that had no idea how in demand the heads are, and they sold it as a salvage 302. I would suggest looking for a pull-it-yourself junkyard and try to sneak it out as a typical 302.