Help Identify Head

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Jul 16, 2013 | 04:13 PM

#1

BigBlue99

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Mountain Pass

Joined: Jun 2011

Posts: 138

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From: Santa Fe, TX

Help Identify Head

I have a 99 5.4 in my F350 and I just JB weld repaired a hole in my head (long story). I am trying to determine what heads I have whether PI or NPI so I know what to look for on craigslist or the swap meet. I know that most PI heads have PI marked on them, but mine don't. I also know that PI heads started in 99 but my build date is 6/98 so there may be a chance its a NPI motor. The casting on the driverside head is:

5.4L W Alloy-A
RF-F 5E-6090-C29A
or
RF-F 5E-6090-020A

Thanks in advance for any help.

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Old

Jul 16, 2013 | 05:51 PM

#2

senix

Super Moderator

Joined: Aug 2008

Posts: 37,383

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From: Frederick, MD

Club FTE Gold Member

Moved the engine specific forum for specific help.

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Old

Jul 19, 2013 | 07:02 AM

#3

JWA

Fleet Owner

Joined: Aug 2010

Posts: 21,254

Likes: 1,656

From: Reynoldsburg, Ohio

Here's an image of a PI head---without this mark its not a PI head:

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Old

Jul 22, 2013 | 03:33 PM

#4

BigBlue99

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Mountain Pass

Joined: Jun 2011

Posts: 138

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From: Santa Fe, TX

OK thanks I am going to assume that I have a NPI motor then. I have read about the PI head swap; has anyone done this and had any negative results?

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