04-13-2015, 12:25 PM
Last edit by: IB Advertising
Interested in swapping your 4.6 to a 5.4? This thread lists several problems you may run in to. The most common are:
Read the full discussion below to find out how to deal with the common issues.
Read the full discussion below to find out how to deal with the common issues.
4.6 to 5.4 Swap Notes
#287
06-02-2015, 04:16 AM
Hey, I'm new to the forum. I have been searching online for some help with a motor swap I am performing. This thread is full on great info and I hope you guys can help me out with a few questions.
I recently took on a project for a friend. He brought me his 98' f150 extended cab truck that originally had a 4.6L with the coil pack type ignition. The truck had another shop install a 99+ 5.4 lightning motor and 4r100 transmission but was not finished or wired up.
Here are a few facts and questions i have:
The truck has the original pcm & fuse box harness
They used the factory Lightning engine harness and it appears to have the factory lightning transmission harness also.
I have a factory lightning under hood fuse box and harness.
What i ran into is the ford lightning engine harness has two plugs that go into the pcm harness. The original 4.6 only allows the one 42 pin plug and not the 16 pin.
The ford lightning fuse box and pcm harness doesn't plug into the fuel pump harness beneath the cruise control module and i do not have the lightning fuel pump harness or ABS system
I am completely stumped and some advice on what i need to get this thing running with the stock lightning engine and 4r100 trans
I recently took on a project for a friend. He brought me his 98' f150 extended cab truck that originally had a 4.6L with the coil pack type ignition. The truck had another shop install a 99+ 5.4 lightning motor and 4r100 transmission but was not finished or wired up.
Here are a few facts and questions i have:
The truck has the original pcm & fuse box harness
They used the factory Lightning engine harness and it appears to have the factory lightning transmission harness also.
I have a factory lightning under hood fuse box and harness.
What i ran into is the ford lightning engine harness has two plugs that go into the pcm harness. The original 4.6 only allows the one 42 pin plug and not the 16 pin.
The ford lightning fuse box and pcm harness doesn't plug into the fuel pump harness beneath the cruise control module and i do not have the lightning fuel pump harness or ABS system
I am completely stumped and some advice on what i need to get this thing running with the stock lightning engine and 4r100 trans
Update on this post:
The truck would not run correctly with that extra plug not having a mate, that plug controls the coil packs to each individual cylinders along with a couple of other things.
I swapped the fuse box and its harness to one from a 98 with a N/A 5.4, this allowed it to crank and run on all 8 cylinders using the Lightning ecm. Unfortunately I had a ton of codes. From here I swapped out the supercharged 5.4 engine harness out with one from a 98 N/A 5.4 and found the matching ecm as well.
Now the truck will crank, run and shift all the gears of the 4r100 trans, only problem I see now is getting the speedometer to work.
In the next few weeks I will be taking the truck to get dyno tuned and adjusted for the bigger injectors and MAF. Thanks for all the help
#288
06-04-2015, 01:08 PM
Now there are adapters to allow the 4.6L intake to be bolted to the 5.4L engine.
This sounds like the best solution, just swap the longblocks and keep everything else from the 4.6L.
http://www.rpmoutlet.com/musv120.htm
This sounds like the best solution, just swap the longblocks and keep everything else from the 4.6L.
http://www.rpmoutlet.com/musv120.htm
Last edited by cobramarty; 06-05-2015 at 07:49 AM.
#289
06-16-2015, 11:16 PM
I recently started a thread about swapping and expedition 5.4 into my 4.6 f150. I was pointed to this thread by GLC and after reading through it twice my question still stands. Will the 99 5.4l engine from the expedition work with my 2000 f150? The expedition is 4x4 and my truck is 2wd. If the engine will work, could I rebuild it with performance parts(forged Pistons, etc) and use my 4.6 transmission?
#290
06-24-2015, 12:16 AM
#291
06-25-2015, 01:43 PM
Should I just rebuild the 5.4 engine(meaning no upgraded parts; stock internals) and put a supercharger on it? What is the most cost efficient route to have a new engine with more power than stock?
#292
06-25-2015, 05:48 PM
#293
06-29-2015, 03:59 AM
If no boost you can just run the stock motor and throw a good set of long tube headers on it, higher stall convertor, and custom tune.
Really depends on your budget and just how much more power you want..
JD
#294
08-16-2015, 05:01 PM
aviator 4.6 to what yr 5.4
Hi im new to the forums here and i been following this thread.
I had a question in regards to the swap. I have an 03 lincoln aviator that i want to swap since my motor with a little over 240k just gave up on me.so my question is can i use the 5.4 off any 03 04 f150 or expedition... Or do i have to use the older 5.4 Any help would be appreciated.
I had a question in regards to the swap. I have an 03 lincoln aviator that i want to swap since my motor with a little over 240k just gave up on me.so my question is can i use the 5.4 off any 03 04 f150 or expedition... Or do i have to use the older 5.4 Any help would be appreciated.
#295
08-19-2015, 02:27 PM
I appreciate all the posting on everything on the 4.6L to 5.4L swap. I changed the oil in my 97 with a 4.6L two days ago and noticed the water reservoir was black, after opening the cap I found oil. But it gives me an excuse to change in the 5.4L. It has the 4R70W in it now and I'm wondering what converter I should put in? I believe everything else will work? Its a 2WD. Obviously going to a PI 2V motor. Hopefully I can find one out of a 99 for the coolant temp sending units on the intake. If you could help me out I would really appreciate it!
#296
09-07-2015, 12:05 PM
#298
09-27-2015, 11:19 PM
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5.4 Navigator Engine
Ok Guys.....I have a 1998 F-150 3 Door BASE model 4WD, 5 Speed manual tranny, 4.6 L Triton engine. Truck looks pretty good, drives good and tranny and drivetrain seem tight (only had it for about a month). Problem is, the engine runs like CRAP. Has had misfires in CYL 3 and 4, along with a upstream O2 sensor fault on the RH bank. Engine smokes and has very poor power at low rpm (below 2000). Yesterday, when I was driving it home (and because I"M STUPID) I ran it VERY LOW on oil. Put about 3 1/2 to 4 qts back in it, but the rattle deep inside comes out when she is warmed up. I know, I know....give me all the crap you want.....been kicking myself too.
SO, I found a local guy here who has a 1999 Lincoln Navigator 5.4 engine with around 115,000 on it. I also have a fella who has a 97 4.6 with 135 on it. Both will fit the truck, I know....the question is.....would it be worth my time to put the Navigator engine in the truck, instead of the standard 4.6. I"m not looking for huge power, or even more performance.....just looking for a good dependable vehicle, and trying to figure out which way to go......Any and all advice would help......
SO, I found a local guy here who has a 1999 Lincoln Navigator 5.4 engine with around 115,000 on it. I also have a fella who has a 97 4.6 with 135 on it. Both will fit the truck, I know....the question is.....would it be worth my time to put the Navigator engine in the truck, instead of the standard 4.6. I"m not looking for huge power, or even more performance.....just looking for a good dependable vehicle, and trying to figure out which way to go......Any and all advice would help......
#299
09-29-2015, 08:16 PM
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#300
11-25-2015, 10:10 PM
