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I can get these heads D00E for $150 they have been exhaust ported and a new valve job .They still have the rail type rockers on them . Are they still worth the investment with wanting a taller lift cam . Placing in screw in studs has to be expensive I bet and have never been or inquired of this procedure .
As I have read the GT40P heads only require some better made headers and already have the hardened seats . They also have the same valve and flow better .
I'd use the gt40p's. The header issue only applies to certain headers. Some fit fine and some don't. I put together a Ranger with a set of those heads and I used a set of FMS headers for a 94-95 mustang, Had to use 90 degree plug wires, some heat boots, and I had to use a wrench on a few plugs to get them out. A chore to change plugs, but they worked fine. There are a lot of header choices with easy plug access but they were limited for the Ranger at the time. I made 290HP to the wheels with a unchipped back yard tuned EFI setup and an old technology B303 cam. The heads were bone stock except I polished out the rough casting in the ports and the chambers. The thing I really liked about them is I was able to run 10.02:1 static compression with never a sign of detonation. I even sprayed nitrous a time or two on 87 octane and no detonation. My guess is the combustion chamber design. I made 337 to the wheels with a small dry shot of N20 and the truck ran a traction limited 7.75 through the 8th mile. Not too bad for a set of Ford Explorer heads in my opinion. I think the P heads are the best production Ford heads available and the Mustang enthusiast sites back that up. If you don't have header issues I think the new technology will serve you best....My opinion
Thanks 35 new tech does sound so much better . Why invest in converting the old heads when these can be found . Thanks again . So many others here have the same thought and used the sanderson headers the 351 will be going in a 37 Ford .
ah, I had them on a 302 and I was pleased. I've got another set now and I will be polishing up the ports like the last set when I get a little spare time. I belive there is a small emmissions bump in the exhaust port if I remember correctly. If you don't port them, at least grind that down a little. I saw that huge post on here about headers and p-heads on a 37 Ford.......I showed it to a friend yesterday who has a 351 in a '37 and he thought it was so cool he ended up joining us here as Blue37. Later.....