gt40p heads and headers

[DMacRacer]

Anyone running these heads? What headers? Any problems? I'm looking to upgrade to this set up.

 

[95horse]

gt40p

i have this on my car you will have issues with non gt40p headers. you will have to use 90 degree angle plug wire and use a hammer and bend the left rear header tube. or you can buy pricer gt40p spicefic headers. i hope you got the head from tri state they have big valves

 

[BlownFiveLiter]

Big valves doesn't necessarily mean big flow. They used a smaller exhaust valve in the GT40P over the standard GT40 and had increased flow over the larger valve. There's quite a few members running the P heads though, so I'll let them chime in with their experiences.

 

[Blackened302]

i've got the heads (and the whole engine, for that matter) and spent the extra money on the P-spec headers--no troubles at all.

 

[xr8d302]

****! I'm slowly realizing I may have made some mistakes here

Will my BBK shorties work with the GT40's I'm getting out of a mountaineer?

 

[95five-oh]

****! I'm slowly realizing I may have made some mistakes here

Will my BBK shorties work with the GT40's I'm getting out of a mountaineer?

Regular GT40's or P's? Regular gt40s came in 5.0 explorers/mountaineers made prior to mid-97 i believe, anything afterwards would be a P head. You can use standard 5.0 shorties on regular gt40s with no issues.

 

[vp6799]

Anyone running these heads? What headers? Any problems? I'm looking to upgrade to this set up.

I have a set of GT40P heads with the factory headers for sale. I also have the GT40 intake out of the same truck. Both are out of a 98 explorer with 73,000 miles. Shoot me an offer.


Vic

 

[FeTTstang]

If you are on a budget get gt40p's. BBK shorties work fine. If you are not on a tight budget get something else like trick flow or afr's.

 

[urban96]

yep regular 302 headers will bolt up to any aftermarket/ford head (afr, edel, tfs, gt40 ect)

the reason people run P specific headers is they have a different placement of the sparkplug and on the #7 primary it comes kinda close. but all you need is 90 degree plug boots and youll be fine