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Old Sep 13, 2017 | 04:08 PM
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Engine Swap
I want to swap an 2004 5.4L motor with the 5.4L motor in my 1999 F150. Is there any iossues that may come up.
 
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Old Sep 13, 2017 | 04:43 PM
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From: Joplin MO
Definitely not recommended. You don't want to try to swap a 3 valve engine into a 99. If you need a new engine, get a 99-03 2 valve.
 
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Old Sep 13, 2017 | 07:13 PM
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I wonder if the block is the same
 
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Old Sep 13, 2017 | 07:45 PM
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From: Joplin MO
The block is the same, but everything else is different. The 3 valve engine also has quite a history of issues.
 
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