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5.4 swap

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Old Aug 28, 2009 | 05:49 AM
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From: capac, michigan
5.4 swap
I have a 97 f 150 4x4 5spd with a 4.6. i was wondering if it is posable to put a 5.4 in my truck and use the same trans and what year 5.4 would i need.
 
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Old Aug 28, 2009 | 07:00 AM
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From: Stanton DE
The trans will bolt up to 4.6 or 5.4
If you get a 99 to 03 5.4 it will have a little more power then the 97 & 98
 
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Old Aug 28, 2009 | 02:12 PM
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From: capac, michigan
Originally Posted by phil6608
The trans will bolt up to 4.6 or 5.4
If you get a 99 to 03 5.4 it will have a little more power then the 97 & 98
Now will i be able to use the same flywheel and clutch? i know some 4.6's have a 6 bolt and i think a 8 bolt crank. what about the 5.4?thanks
 
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Old Aug 28, 2009 | 02:28 PM
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From: Stanton DE
I'm a little uncertain on the 6 and 8 bolt flywheel.
You might just have to swap that. And I'm not sure about the clutch. Never messed with it.
 
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Old Aug 28, 2009 | 03:09 PM
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Would a v10 fit?
 
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Old Aug 28, 2009 | 06:00 PM
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To make the 5.4 work, you will need to get the computer from the 5.4 or have a custom tune done to the computer of your 4.6. The romeo 4.6 has a 6 bolt flywheel and the windsor has an 8 bolt flywheel. If you have a romeo 4.6 you will need to get a flywheel from a windsor 4.6 for it to work on the 5.4 which are all windsor engines. The v10 thing has been done but would be a lot more work than the 5.4 swap. I don't think the v10 computer will work with the pats system and the gauges as well as the trans you have in the truck now would not last very long behind a v10. Good luck and let us know how it goes.
 
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Old Aug 31, 2009 | 12:28 AM
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Ok i think i have what i need figured out. i can use the 4.6 headers on a 5.4. cause im pretty sure the heads are the same. am i right or am i wrong?
 
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Old Aug 31, 2009 | 12:39 AM
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and what years had the problems with the spark plugs not have enought threads?
 
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Old Aug 31, 2009 | 01:56 AM
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From: Stanton DE
Originally Posted by 975spd4x4
Ok i think i have what i need figured out. i can use the 4.6 headers on a 5.4. cause im pretty sure the heads are the same. am i right or am i wrong?
Yes they will bolt to the head.
You may have other fitment problems and the exhaust will need to be adjusted.
 
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Old Aug 31, 2009 | 02:01 AM
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From: Stanton DE
Originally Posted by 975spd4x4
and what years had the problems with the spark plugs not have enought threads?
97 to 03 had the plug problems.They started putting the upgraded heads on in mid to late 03. So it's going to be hard to find one with the updated heads.
 
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Old Aug 31, 2009 | 04:39 AM
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From: capac, michigan
Originally Posted by phil6608
97 to 03 had the plug problems.They started putting the upgraded heads on in mid to late 03. So it's going to be hard to find one with the updated heads.
i was looking at getting a reman motor when and if i do this. Do you think they would have the updated and how would i be able to tell if it does?
thanks
 
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Old Oct 8, 2009 | 03:44 AM
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Is it best to go with a non egr 5.4 or a egr 5.4?
 
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