What stock heads are the best.

[krallman]

What stock heads are the best on the 5.0 other than the cobra

 

[91 HATCH]

THE GT-40 P HEADS ARE THE BEST

OR USE PORTED E7TE HEADS

 

[RS200]

I thought the GT-40 heads were better than the GT-40P's...

 

[foxmustangman]

What's the difference between the two?

 

[Mr. Rustypwnz]

no, the p's flow more, they have a smaller ex. valve, i love mine over the gt40's.

 

[25thmustang]

40Ps would probably be your best bet, or work over some E7s!

 

[krallman]

gt 40's were aluminum weren't they. And e7's came on everything 87 and up right?

 

[91 HATCH]

only the ford racing gt 40x heads are aluminum

gt 40 p heads can be found on 98-02 5.0 explorers

 

[Foxfan88]

everything 87 up had e7s from the factory.

93 cobras, lightning pickups, and some explorers for a few years had the regular GT-40s

later year explorers had the gt-40 Ps which are the best factory head.
they have a smaller exhaus valve. but a totally different port design but the P heads flow better than gt-40.

the alum gt40s are different, they are aftermarket and flow better. IIRC the X gt40s arent much more than the regular iron gt40s and the Y gt40s are the better alum gt40s

 

[krallman]

Thanks guys im going to get the 302 built next year and the class i race in everything has to be stock. So it is going to be the best stock stuff.

 

[Roland69]

I talk to alot of the circle track racers here and they all tell me the GT-40 is a better head than the P's.....maby for them because they run like 7000+ rpm

I was always under the impression that the 40's were better than the p's even before they tell me that.

 

[25thmustang]

Thanks guys im going to get the 302 built next year and the class i race in everything has to be stock. So it is going to be the best stock stuff.

What kind of racing, and what can be done to the heads? This might make your decision harder or easier!

 

[88mouse]

What's the difference between the two?

The gt40p's don't have any smog passages in them. I have heard both good and bad about them. To me the p's are better you can port them more.

 

[superspec]

ok heres my question. will headers for e7 heads work on gt40p heads?

sometimes i see headers listed for 40p heads.

 

[Aliate X]

gt40p's use a different header

 

[Mustang5L5]

I talk to alot of the circle track racers here and they all tell me the GT-40 is a better head than the P's.....maby for them because they run like 7000+ rpm

I was always under the impression that the 40's were better than the p's even before they tell me that.

The P's are a slightly modified version of the plain GT-40. The plug angle was reposition for the spark to show the most, they flow slighly more and the exhaust valve was reduced to help scavenging.

Most modifications tend to improve a design. I beleive they did in this case

 

[Foxfan88]

gt40p's use a different header

to easily get plugs in and out. but you can use regular headers if you like. my friend used plain old headers with his p heads. he could get the passenger side plugs out fine, but had to remove the header to get the drivers side out.

 

[krallman]

I can run any head for the 5.0 as long as its factory and not aluminum. I can't port or anything like that which i dont mind cause anything thing will be better than the e5's. But i do have to run the factory header.

 

[Roland69]

what about heads off a late 80's early 90's 351W EFI....would they be a nice head to get