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2007 5.4L block compatibility

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Old Sep 22, 2014 | 02:22 PM
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pfcgrinner's Avatar
pfcgrinner
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2007 5.4L block compatibility

Not sure if i should post this here or in the Expedition forums, but here goes.

I'm trying to find out if I can use the block from an '04 Expedition (5.4 engine code 'L') in an '07 F-150. The problem is the '04 has a 2 valve head and the '07 is a 3 valve.

The Ford dealer told me to call the junkyard, the junkyard told me to call the dealer. Tried Ford Customer Service and they didnt know. Called a couple of parts stores and the best suggestion I got was tear it down and see...

Anyone able to offer insight?
 
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Old Sep 23, 2014 | 11:05 AM
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70f100longbed
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The short blocks will interchange just as long as both has the same pistons. The 3v has flat top pistons and I think the 2v does too just not 100% sure.
 
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