[KansasCityGT]

I know GT40P heads have smaller exhaust runners and the spark plugs are at a different angle which mean you need special headers. But, I know the Ford Explorer at one time used actual GT40 heads before they switched to the common GT40P heads. At what year did this switch take place? Then, what is the year range that uses actual GT40 heads?

Thank you in advanced.

[Bigfatts]

I believe they started using the P heads after '97. The one I pulled my Ps out of was a '98.

[1slo5.0]

Originally Posted by KansasCityGT I know GT40P heads have smaller exhaust runners and the spark plugs are at a different angle which mean you need special headers. But, I know the Ford Explorer at one time used actual GT40 heads before they switched to the common GT40P heads. At what year did this switch take place? Then, what is the year range that uses actual GT40 heads? Thank you in advanced.

Mid 1997 is when they started using the P heads. 96 to early 97 had the standard GT40 heads. I wouldn't let the special header issue deter you from getting P heads. They are a better head. Many companies make P specific headers and there are also headers out there that fit both styles of heads.

[93hatch]

even though the exhaust runners smaller, its better designed so it flows better regardless of being smaller

[1slo5.0]

Originally Posted by 93hatch even though the exhaust runners smaller, its better designed so it flows better regardless of being smaller

I don't think the runners are smaller but the exhaust valves are smaller and the exhaust runners are more efficient than the regular GT40 heads.

[Bigfatts]

I've heard that if you run long tube headers the plug angle doesn't interfere with anything. Dunno if that's true or not because my Ps never got installed.

[93hatch]

i have some no name unequal shorties on mine, spark plug wires are fucking close and i have to keep movin them cuz they like to touch

[1slo5.0]

93hatch, that is one fat cat in your avatar!!!

[93hatch]

Originally Posted by Darrell 93hatch, that is one fat cat in your avatar!!!

haha yeah i felt bad for her so i put her in my avi, to spread the word that fat cats are ever growing in population, and we need to do our part to stop this tragedy

[1slo5.0]

Fat cats rule!

[93hatch]

Originally Posted by Darrell Fat cats rule!

hahaha they do darrell, they do

[kingcobracustoms]

I have the "P" heads with ford motorsport ceramic coated stainless headers and you have to use a plug socket and a wrench on the end of it to get all but one plug out... no extensions will make the angle. love the power though.

[93hatch]

^have you had your car on a dyno yet? i plan on gettin mine dyno'd in a few weeks

[kingcobracustoms]

yea... but thats not the only thing done to mine... anyway I pulled 420 at the wheels.

[93hatch]

Originally Posted by kingcobracustoms yea... but thats not the only thing done to mine... anyway I pulled 420 at the wheels.

hahaha ohhh yeah that wont exactly compare to my na dyno

[b-on-b 5.0]

u still got those heads for sell bigfatts

[Bigfatts]

I sure do

[1slo5.0]

Originally Posted by kingcobracustoms yea... but thats not the only thing done to mine... anyway I pulled 420 at the wheels.

420 at the wheels with P heads???? What else is done to the engine? Must be a power adder combo?

[93hatch]

Originally Posted by Darrell 420 at the wheels with P heads???? What else is done to the engine? Must be a power adder combo?

+1 gota be some boost in there somewhere, im gona be happy to hit 275whp

[b-on-b 5.0]

can you email me some pictures of them? my e mail is flyfisher120@aol.com and wat else do i need so i can bolt those up to my stock 5.0