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Old 12-02-2013, 11:05 AM
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5.4L f-150 upgrade suggestions ?

Hey fellas I"ve got a question for the car gods. I have a 07 f-150 5.4L 2wd and it's currently on a stand in my garage due to failed thrust washer and possible main bearings . I use the truck for work and play and I also use it to haul a utility trailer full of tools now and then . Since I"ve got it apart I would like to beef it up and give it some attitude . I'm not real sure what would be the best way to get the most bang for my buck tho . Does anybody have any suggestions ? Thanks

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Old 12-02-2013, 08:31 PM
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Roush supercharger if you can still find one. Not much in the 5.4L are actually bad. Just the cam phaser issue and the 2 piece spark plugs.. Parts for the Mod motors are hard to come by

6.8L V10 swap would be possible tho
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Old 12-03-2013, 05:02 AM
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Drop a 5.4 2V Supercharged Lightning Motor in it, you can get stock motors real cheap and they make 380/450. For a few bucks 400/500 rear wheel numbers are very easy to achieve
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Old 12-03-2013, 06:32 AM
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Go to Ford Truck Enthusiasts web site and ask that question. As far as a 5.4 three valve computer engine - not much is done without spending big bucks on a physically large 331 cid engine that's a real PITA to maintain. Now, if you want to start from scratch, just using the truck as a platform, a well built 351 out to 383/393/408, or a 460 will get you there as well and probably cheaper in the long run. Yes, I have had Ford's OHC 4.6, 5.4 and 6.8 gas engined trucks and they do run well, but are not a DIYer's friend as are the older push rod engine versions. (Roush superchargers $6400 for a 5.0 later F150 and go up from there)
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Old 12-03-2013, 09:45 AM
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2v out of a lightning would be cool
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Old 12-03-2013, 09:48 AM
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V10 Swap - F150online Forums

that would be cool also
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Old 12-03-2013, 03:18 PM
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Quote:
Originally Posted by monster76 View Post
V10 Swap - F150online Forums

that would be cool also
That thread died before it was completed. The extra length creates problems with radiator/bracket fit up and major weight distribution - then the puny in comparison to an F250/350 frame along with front suspension components.
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Old 12-03-2013, 03:57 PM
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he did complete it at the end he even was talking about how the fuel economy was better than he originally thought

My New Photo Album

there are his photos
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Old 12-03-2013, 04:02 PM
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The '04-'07 3 valve was probably the worst 5.4L that Ford ever built. The spark plugs were a 2 piece design prone to breaking and the cam phaser's often wear out before the 100k mark.. The 4.6L in that time was still a non VTC 2V engine and is as bulletproof as a Mod motor can be.

6.8L V10 is a 5.4L + 2cyls
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Old 12-05-2013, 01:36 PM
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The 5.4 from hell !!!!!

I had a 04 5.4 that lasted 30,000 miles and then I traded it in on a brand new 07 which is currently on a stand in my garage rite now . It would take me a week to sit here and type out all the hell that this truck has put me thru . The short version is that at 200,000 miles the truck completely dropped dead . First it was the tranny , then the pinion bearing in the rear end , and a year ago almost to the day I began chasing a ghost called camshaft position sensor a circuit bank 2 . Now Anybody who knows about these motors probably already knows what it took me 6 months and a few thousand dollars to figure out and that is that there's most likely nothing wrong with that sensor and in my case nothing wrong with vct solenoids or phasers either . I ended up changing one of the heads because the cam almost welded itself to the head . I ended up getting six problem free months out of it after that but I now know that I just put a bandaid on the real problem because it went down again a couple days ago and I now know it was always thrust washers and crank bearings . I finally got the motor out this morning and on the stand and I'm getting ready to change bearings . I wanna beef the motor up but money is tite rite now so I'm just trying to put a good foundation down that I can build on when moneys better . Does anybody have any recommendations on whether I should go back with a certain type of bearings ? And should I switch to a better crank while I'm in there ? Sorry for the long story . I'm sure you can feel my pain !!!
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Old 12-05-2013, 05:12 PM
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at 200 K , the motor is a basket case /worn out.
Get a crate motor, or a salvage yard motor from a reputable seller and quit wasting time and money
My 4.6 2 valve (98) just turned 200 K and has never been opened.
Motorcraft parts, platinum plugs and Mobil 1 oil changes on a religious basis is why.
The early gen 5.4 was (2 valve) was as dependable. As stated the 3 valve jobs ...not as much.
MOBIL 1 from the get go would have made it live a lot longer.
Putting in anything other than the in same engine as a replacement is a project at best and one that will keep you busy for a good while. If you plan on doing that , you should buy something to drive in the meanwhile.
Putting in a Cummins diesel would be the thing to do if you use it for heavy hauling, except for the fact its only an F 150 .
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Old 12-05-2013, 06:03 PM
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The early 5.4 was totally dependable for about a year or so, but the issue it did have wasn't huge like the cam phaser issue. Just spitting plugs out is all due to too few threads
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Old 12-05-2013, 06:16 PM
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Couple weeks ago I bought a Red '07 XL. RCLB with the 4.6L and tow pkg. It will still chirp the tires and has no shortage of power. Huge improvement over my '95 K1500.. I've been told the 4.6L was weak sauce, but IMO it's far from it. My dad had a '97 150, 4.6L with the tow pkg and altho I was only 12 or 13 when he got rid of it, I remember it was a monster also
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Old 12-05-2013, 06:41 PM
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If you have that much internal damage to that engine, scrap it!! You can find that basic engine in any RWD car or truck as a 4.6 or many trucks as a 5.4. Buy an entire vehicle if necessary for the 'puter and wiring harness if it doesn't come from an identical truck. There is nothing wrong with the Ford modular motors though some did have, as noted, spark plug spit out problems(2V engines) only to be 'improved' by heads with spark plugs that broke when being removed(3V engines - 5.4 & 6.8). With proper care, those 4.6/5.4 engines will run several hundred thousand miles (NY State Police still have mostly 4.6 Crown Vics with many, many miles)
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Old 12-05-2013, 06:51 PM
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I was looking for a Crown Vic in the junkyard for my Ratrod as I was going to go with a 4.6 Mod motor in it a while ago, but couldn't find one with less than 150k on it and most were touching 200k.. I have heard that 500k is a common number when it comes to Taxi's with the 4.6L.
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