If I wanted switch engines....
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Elder User
Joined: Sep 2002
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From: White Sands, NM
If I wanted switch engines....
Hi folks,
I just got to thinking today about how to spend my upcomming bonus. If I wanted to swap my 4.2L with a 5.4L, would it be a direct replacement? I can see no reason why it wouldn't fit, the trucks are all the same right?
I imagine that the computer would have to be swapped too, but I can't really think of anything else that would have to change. My manual tranny would bolt right up wouldn't it?
Anybody know a reliable supplier of remanufactured engines? I thought there was an old thread here about different engine suppliers but I can't find it.
It's all theoretical at this point, but I'd appreciate your opinions.
Roger
I just got to thinking today about how to spend my upcomming bonus. If I wanted to swap my 4.2L with a 5.4L, would it be a direct replacement? I can see no reason why it wouldn't fit, the trucks are all the same right?
I imagine that the computer would have to be swapped too, but I can't really think of anything else that would have to change. My manual tranny would bolt right up wouldn't it?
Anybody know a reliable supplier of remanufactured engines? I thought there was an old thread here about different engine suppliers but I can't find it.
It's all theoretical at this point, but I'd appreciate your opinions.
Roger
Hotshot
Joined: Aug 2002
Posts: 12,679
Likes: 15
From: BC, Canada
If I wanted switch engines....
If you had a donor truck to take all the parts off you would be ok. The transmission is different, motor mounts, exhaust, all brackets on the engine, p/s pump. alternator etc etc etc are all different.
Senior User
Joined: Sep 2002
Posts: 462
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From: Barrington USA
If I wanted switch engines....
the transmission should be the same as long has it's an auto else you'd need to get an auto. the other thing is while it won't make a differance in the swap the 5.4 came with an 9.25 rear and the 4.2 and 4.6 came with the 8.8 rear end
New User
Joined: Jun 2010
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will it swap or be a nightmare 4.2l to 5.4l triton
hello all i have a 2000 ford f150 with 300,000 miles on factory motor my 8.8 rearend went bad so i replaced it with a 9.00 and rebuilt the auto tranny . i ran across a 2001 5.4l triton motor with everything wiring harness,a/c,ps and alt.with 30,000 miles on it .i was told it would bolt up to my auto trans all i would need is computer and exhaust , and motor mounts is there anything else im missing would like everyone input thanks
Senior User
Joined: Dec 2008
Posts: 322
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Do a search on this forum. There's a 6 page thread laying around here somewhere that covers this issue. You have to swap EVERYTHING out. Harnesses, ECU, and w/that PATS, mounts, and I think I heard you need a tune as well. It's not an easy job and is something for fun as the gains are minimal.
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I have a 98 F150 5.4 with a knock and am considering replacing it with a 5.4 out of a 2002 F350. IS this feasible and what is involved?
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i have a 97 4.2 and the motor needs replaced i was wondering what all engines will bolt up without changing alot of stuff and costing me a fortune it is a 5 speed and when i bought this truck it was fine then a couple months later it started using oil like crazy if anyone has any sugestions please let me know thanks
Cargo Master
Joined: Aug 2009
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From: Olathe
i have a 97 4.2 and the motor needs replaced i was wondering what all engines will bolt up without changing alot of stuff and costing me a fortune it is a 5 speed and when i bought this truck it was fine then a couple months later it started using oil like crazy if anyone has any sugestions please let me know thanks
You're better off fixing the 4.2 then trying to swap in a V8 ( Although a 4.6 might work) unless you can get a cheap donor truck that has everything (block, mounts, maybe the tranny, etc...) you need for the swap.
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