4.6L to 5.4L engine swap. - Hot Rod Forum : Hotrodders Bulletin Board
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Old 08-31-2010, 08:34 PM
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4.6L to 5.4L engine swap.

hey. I have a 97 f150 with a 4.6L with a manual trans. the motor is on its last leg and i wanna know how much work is involved in swapping it for a 5.4L(i.e. different computers, wiring harnesses, will my flywheel mate up with a 5.4,etc.)

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Old 09-01-2010, 08:32 AM
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these modular motors are the same it should bolt up, get the motor harness and pcm it should all plug and play.

id get the harness cause some of the 5.4 2v use eot sensors in the side of the pan. depending on your year of donor engine, the ealier 4.6l use dual coil packs rather than the coil on plus design. 4.6/5.4/6.8 are all the same bolt pattern.
53 fords rule!
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