Engine swap

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Dec 6, 2017 | 09:59 AM

flyboy461jd

Thread Starter

Junior Member

Joined: Feb 2016

Posts: 7

Likes: 0

Engine swap

I have a 2003 F150 XL with a 4.2L and want to swap it with a 5.4L V8. Will the mounts line up?
Thanks

Dec 9, 2017 | 08:20 PM

JCR 56

Senior Member

Joined: Jan 2013

Posts: 3,657

Likes: 1,029

From: KY.

The transmission bell housing pattern will not match the 5.4.

Dec 11, 2017 | 12:59 PM

Eric Kleven

Renaissance Honky

Joined: Jun 2016

Posts: 1,083

Likes: 156

From: Mound, MN

Grab the engine, trans, wiring harness, and PCU from a donor vehicle. Swap the whole works over. Still not 'easy', but definitely 'less bad'.

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