I'm now in the enviable position of needing to replace the 4.6 in my 98 4x4. An obvious option is to do the 5.4 swap using a '99 perhaps, following the swap notes and other info I've found herein. (Hats off to you who have made the information available!).

Another option I've thought about is to swap in a 2004 5.4 24V. If this comes about I'd probably also replace the tranny with a 4R75E instead of rebuilding the 4R70W in there now. I would likely need the PCM from the donor and would need to have the PATS disabled in it. Without thinking diving into harness differences and wiring diagrams yet, what reasons am I unaware of that would make this a bad idea, if not impossible?

Thanks for your knowledge fellas.

 

I researched this option a little before I did my 5.4 swap. I came to the conclusion that it wasn't worth the hassle. However anything mechanical is possible, it just depends on how much time/money/work you want to devote to said project.

 

So for the sake of discussion let's say that money and time are no problem. That leaves hassle. Any particular obstacle that made you give up on that idea?
The gains on the 24V are significant over the 16v. For that, I can put up with some hassle, but it has to be a project that can be completed within a reasonable amount of time and money.

Can someone dissuade me?

 

I mistook your post as thinking about a 32V 5.4 not a 3V out of a newer f150...imo def not worth it, pats, intake, wiring etc will be a major headache - just not worth THAT much extra work for a little more power (AND MORE ISSUES with that motor)...if you want to do something cooler than a 2V 5.4 look at a navi 32V...honestly still a lot more work for not a ton more gain, but atleast with that you would be going to a 4r100 trans! if you are going to do something other than a simple 2V 5.4 swap the ONLY way to do it in my opinion is to get the entire donor vehicle (preferably running)...that is how I did mine and after doing it there is no way in heck I would do it any other way!

If I had unlimited money, find a wrecked expedition or get lucky like I did and find a low mileage f150 with PI 5.4 AND a 4r100 trans, rebuild the shortblock (make sure it has a forged crank, get forged rods & pistons), do the complete drivetrain swap (go look at my swap thread or PM me) and then start looking for all the parts for a lightning supercharger setup, if you look hard enough it can be done for less than $2K from what I have been told and you can make HUGE power with that setup for probably close to the same amount of money and probably less hassle as a 3V 5.4 swap with a 4r75, and you would have a way stronger trans!

heres a link to my swap thread...just finished it a week or two ago:
https://www.f150online.com/forums/v8...-4-6l-out.html

 

also if you are 4x4...that will open a whole new can of worms if you are looking to go to a different trans

 

a 16 or 32 valve 5.4 is a good idea and a simple swap, the 4r75 is also a simple swap


the 24 valve 5.4 isn't worth the hassle (read the thread on the one swap and the issues it had)

 

Hmm - 18 valve? 2.25 valves per cylinder?

 

I had not though about the 32V. Sounds fun... I've never worked on a DOHC before. If I could find a '99 32V 5.4 that might make swap a little friendlier than the 2004 24V I has been thinking about. (if the Navigator and F-series are part-friendly.) I suppose I would need the ECM from the donor as well.

Can anybody talk me off of this ledge?

 

just dont do a 3v 5.4 out of the 2004, everyone here who has done it is telling you its a project you dont want to get into, go 2V or 32V navi 5.4. I think the years for the 32V motor you would want are limited, I think the navi had a regular 5.4 in 99' I think you need a 2000 or newer if you want a 32V. Bottom line pick something other than that 2004 3V motor you are hung up on, its just not worth the headache you will end up with. There has only been one done and I think the guy had a hell of a time getting everything to work together well, while tons of us have done 2V swaps and more than a few have done Navi swaps. What isnt cool about a supercharged 2v 5.4 making way more power for your money than any of the other options!

 

I did read the thread on the 3V 5.4 swap. It read like a horror novel. BUT it sounded like his late discovery of using the timing cover from a F-250 would have made a lot of difference sooner AND he had to deal with a busted motor.

All the same, I think I'll avoid it anyway. If I can't find a 32V 5.4 I'll default back to the 16V and move ahead.

Does anybody have a source for turn-key remanufactured engines? Everything I've seen so far were HO crate engines. I'd rather go stock. And I'd rather pony up the extra dough on the reman with matching parts (intake, rails, etc) then have to source all the extras myself... I think. Thoughts anyone?

 

 

anyway, yes once you change the oil pan over to the F-150 oil pan it's a direct bolt in

 

I've found a 2001 5.4 DOHC. I'm looking through my chiltons but I can't see a lot of difference. Would this work in my 98 F150 without too much hassle? I can get a new harness and PCM get it reprogrammed, etc. without too much trouble, but I don't want a nightmare project. Would anything make the 2001 any more difficult than a 1999 or 2000?

I'm indebted to you all for your collective knowledge.

 

use the complete navigator motor and engine wiring harness...


swap to your current trucks oil pan, get a new mid pipe and the tune you are planning on

 

that motor will work great...do IT! BUT I like I said before try to get the ENTIRE NAVI wiring harness. Hopefully the navi harness will still plug right into your body harness connections at the firewall (may have to check to see if the pin-outs are the same) and then you should be ok with your current cluster and ignition (as long as you either get it reprogramed by the dealer OR have PATS turned off with a custom tune). Which trans are you going to run? The new pcm will only work if you get the trans from the navi also because Im pretty sure they have the bigger 4r100, if you can swing it Id grab the trans too!