04 4.6 heads and plug threads question

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Sep 21, 2004 | 06:11 AM

#1

cbsaf

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From: Alabama/Florida

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04 4.6 heads and plug threads question

Does the 04 4.6 in the new f150 have improved heads with more threads to prevent sparkplug blowout?

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Sep 21, 2004 | 09:03 PM

#2

LxMan1

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I have heard that all 03-up have them.

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Sep 22, 2004 | 05:07 AM

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cbsaf

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Sounds great but does anyone know for sure?

Last edited by cbsaf; Sep 22, 2004 at 05:51 AM.

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Sep 22, 2004 | 07:26 PM

#4

LxMan1

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I know for sure that the 04/05 plugs are totally different and have over 1/2" of thread on them. The head was redesigned as well when they added the 3rd valve.
I have read on hear from a couple of Ford techs that the 03's are ok.

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