GT-40 P cylinder head question

[topless95]

I was wondering if anyone knows the specs on a GT-40 P cyl heads? Also how do these stack up against other heads?? Thanks as always for your input

 

[LAFENATU]

Very good budget upgrade. You will need to purchase GT40P specific headers since the spark plug location is different.

Similar runner volumes to the standard GT-40 head (around 145-155cc on the intake side, I think, compared to E7TE's 124cc).

Also flows similar intake and exhaust cfm numbers to the standard GT-40 head. All accessory bolt locations and valve train geometry are the same as the standard GT-40.

1.85/1.46 valves (compared to 1.85/1.54 for the standard GT-40). The exhaust port was redesigned and is more efficient, thus the ability to use the smaller exhaust valve.

Spark plug is moved down and rotated out placing the electrode closer to the center of the combustion chamber. This provides a better and more complete burn. Not only does this help performance but it also reduced emissions. Note: The GT-40P's don't use standard 5.0L plugs. You must use plugs for a 98+ Explorer/Mountaineer V8 or for a Cobra/Lightning equipped with iron GT-40 heads.

 

[Stangbangin]

Awesome budget head. Specific headers or MAC longtubes will fit. I fit them to my p heads a while back and when I sold them the guy whose car I put them on had bbk longtubes which didn't even come close. He bought some new MAC's and they fit perfect.

 

[9d5-sn95]

i have bbk long tubes and dont have a problem with the p's