04 engine swap
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New User
Joined: Nov 2008
Posts: 11
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04 engine swap
Hi Guys
I have 04 4.6L auto, 2wd F150 about 6 months ago bend a valve and cracked a head had them replaced. now when i start the truck i get white smoke from the tail pipe and a anti freeze smell. thinking about getting rid of this dog and dropping in a 5.2L. what does it intail
Love the truck just what to stop have problems with this motor.
I have 04 4.6L auto, 2wd F150 about 6 months ago bend a valve and cracked a head had them replaced. now when i start the truck i get white smoke from the tail pipe and a anti freeze smell. thinking about getting rid of this dog and dropping in a 5.2L. what does it intail
Love the truck just what to stop have problems with this motor.
Elder User
Joined: Jul 2008
Posts: 554
Likes: 1
From: Newport, Wa.
Just finished reading an article in Classic Trucks magazine, where they are trying to make a 4.6 work in a '68 bump side. It's very difficult. I would strongly suggest you just get your hands on a rebuilt 4.6 and go with that. These days, with all the electronic controled engines we have it's just too much trouble to change what the rig came with. JMO.
Post Fiend
Joined: Nov 2001
Posts: 7,698
Likes: 4
From: Neenah, Wisconsin
1. There are no 5.2's......it would be a 5.4....
2. If you could find a whole F-150 thats been wrecked to use as a donor vehicle its not that bad, but without the wiring harness, pcm, ect.....it's gunna be expensive and hard....
2. If you could find a whole F-150 thats been wrecked to use as a donor vehicle its not that bad, but without the wiring harness, pcm, ect.....it's gunna be expensive and hard....
Post Fiend
Joined: Nov 2001
Posts: 7,698
Likes: 4
From: Neenah, Wisconsin
Just finished reading an article in Classic Trucks magazine, where they are trying to make a 4.6 work in a '68 bump side. It's very difficult. I would strongly suggest you just get your hands on a rebuilt 4.6 and go with that. These days, with all the electronic controled engines we have it's just too much trouble to change what the rig came with. JMO.
MMNC (SS)(Ret)
Joined: Mar 2004
Posts: 11,606
Likes: 151
From: SE Georgia
I really recommend you buy an entire donor truck like Ryan said.
you'll need the entire motor, accessories, PCM, wiring harness, the transmission, the rear axle, motor mounts
you can mix n' match some stuff...but if you're going to put a 5.4 into the truck, do it right and match the stuff up properly.
if you cannot do a donor truck...it's probably in your best interests to just swap in another 4.6 2v
you'll need the entire motor, accessories, PCM, wiring harness, the transmission, the rear axle, motor mounts
you can mix n' match some stuff...but if you're going to put a 5.4 into the truck, do it right and match the stuff up properly.
if you cannot do a donor truck...it's probably in your best interests to just swap in another 4.6 2v
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