How ID PI heads.
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Cargo Master
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From: Olathe
How ID PI heads.
In my wish list making for modding my truck I have wondered how to tell if I have PI heads.
The build sticker inside the door says if I remember right 10/98 so don't know if I have the PI heads or not, if I don't have them how difficult could it be to swap for the PI heads or would it be better to go to a aftermarket head design like Trickflow?
The build sticker inside the door says if I remember right 10/98 so don't know if I have the PI heads or not, if I don't have them how difficult could it be to swap for the PI heads or would it be better to go to a aftermarket head design like Trickflow?
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From: Stanton DE
Look on the side of the head. Ware the number is it will have PI there too.
The only way your going to move as much air as the trick-flows is with a stage 3 port and bigger valves.
In other words,,,you cant hardly match the power of the Trick-flow heads.
The only way your going to move as much air as the trick-flows is with a stage 3 port and bigger valves.
In other words,,,you cant hardly match the power of the Trick-flow heads.
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Cargo Master
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From: Olathe
Last edited by Hybris; Jan 21, 2011 at 11:50 PM. Reason: Spelling Error
Elder User
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From: Stockton Ca.
On the driver side valve cover there will be a white decal with numbers on it, post what is there and I will be able to tell you if they are P.I. or not.
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From: Stanton DE
Post Fiend
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From: Stanton DE
PI = performance improved.
Your truck should have them Jeff.
They started putting them on the 5.4 in 99 and I'm not sure on the 4.6 but I think it was in 2000 or 2001.
Your truck should have them Jeff.
They started putting them on the 5.4 in 99 and I'm not sure on the 4.6 but I think it was in 2000 or 2001.
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Cargo Master
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From: Olathe
9G876AA
FORD WINDSOR ONTARIO PLANT
982741631
455 10-01-98 54L
Again thanks for all the help so far.
Elder User
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From: Stockton Ca.
9G876AA Is P.I.
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Cargo Master
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From: Olathe
Yes it does appear to have them.
Thanks for the help Ron.
Thanks for the help Ron.
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