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How to tell engine mfg date?

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Old Nov 22, 2007 | 09:40 AM
  #1  
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How to tell engine mfg date?

I want to trade my '04 Screw for an '08 FX2, but want to be sure to get the new 5.4 engine without the spark plug problem. Rumor has it that engines made after 10/06/07 have re-designed heads to eliminate the well-documented spark plug problems. How can I tell if a truck has the re-designed heads or not?(dealership sales staff is clueless).

Thanks in advance,
CL
 
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Old Nov 22, 2007 | 08:06 PM
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There is usually a sticker on the front driver's side cylinder head with several codes and the assembly date of the engine on it.
 
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Old Nov 23, 2007 | 06:35 AM
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Curious, where'd you learn about the redesign? I probably missed the thread on that.

Thanks
 
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Old Nov 23, 2007 | 08:54 PM
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There hasn't been a thread on here about it, but there has been a redesign of the heads and spark plugs.
 
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Old Nov 23, 2007 | 10:48 PM
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Originally Posted by ohboy44
There hasn't been a thread on here about it, but there has been a redesign of the heads and spark plugs.
Anyone else hear of this?
Where did you hear this?
What where the design changes to the heads?

I'm a little skeptical....
 
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Old Nov 24, 2007 | 01:27 AM
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I am a little skeptical because the parts ordering guide lists 2004-2008 left and right bank cylinder heads as the same part number for the last 4 model years.
 
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Old Nov 24, 2007 | 07:54 AM
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Yea, I have spoken to different Ford dealers and they haven't made any change in head design according to them, but they have put anti-seize on the plug shield.
 
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Old Nov 24, 2007 | 12:08 PM
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Well I know first hand, but I saw it on another Ford truck site. It was a oasis
broadcast last week. I just don't know how much I should talk about it. You see I like my job
 
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Old Nov 24, 2007 | 02:23 PM
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If there was a redisgn would the parts books show that or would they just fill all orders with the redesigned part? Since I would imagine the new part will marry right up to the current parts.
 

Last edited by Silent Thunder; Nov 24, 2007 at 02:27 PM.
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Old Nov 24, 2007 | 03:18 PM
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Will my 07 have the redesigned heads and spark plugs?
 
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Old Nov 24, 2007 | 04:20 PM
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As of 10/09/07 all 3 valve engines got new heads and spark plugs.
And no the new spark plugs won't fit the old engines.
 
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Old Nov 24, 2007 | 04:25 PM
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Originally Posted by ohboy44
As of 10/09/07 all 3 valve engines got new heads and spark plugs.
And no the new spark plugs won't fit the old engines.
But the new heads will fit the older engines, correct?
 
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Old Nov 24, 2007 | 04:45 PM
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They will but I don't know everything that would go into the swap(calibration, gaskets....) but I will try and find out.
 
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Old Nov 29, 2007 | 06:25 PM
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O.K. I found out if you wanted to spend the $$$$$ for the new heads they will bolt right on. No difference except the spark plugs.
 
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Old Nov 29, 2007 | 07:06 PM
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Thats a good one if there is nothing wrong with these heads worth issuing a recal from ford why should it warrent changing the @@@@ing design of the heads, and of course the new plugs wont fit the old heads. Ford is losing lots of loyal people over this I bet.
 
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