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7.3 Godzilla into 3rd gen? Anyone?

Discussion in 'Engine & Performance' started by Jim Cross, Jun 30, 2020.

  1. Jim Cross

    Jim Cross New Member

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    Thinking about new power for my ‘08. Anyone performed this swap?
     
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  2. 07xln

    07xln Full Access Members

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    The crate motor just became available on July 1st. I don’t think anybody has swapped one yet let alone in an expedition.
     
  3. Aspen03

    Aspen03 Full Access Members

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    That and the fact it will be into a 5 figure price tag almost instantly, even if it can be done you're unlikely to see one soon I'm sure. I'd figure most in this platform would likely just do a built 5.4 along w a turbo or supercharged. Long history of builds and plentiful options with some big power numbers. Probably half the cost as well.
     
    Last edited: Jul 6, 2020
  4. FordFreak

    FordFreak New Member

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    My first post here on the forum. I'd be very interested in doing a swap (or hearing about) for the new, twin turbo engine they're currently putting in Expeditions. :) Any thoughts on that?
     
  5. wingrider

    wingrider Full Access Members

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    I's say, go find a complete iron block or AL GT500 motor. Keep it a 5.4 and run it (as built) supercharged. Sky is the limit there.
     
  6. pastorjeep

    pastorjeep Member

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    I like your thinking. I just made an offer on an 08' that has the knock knock knock. I have a 7.3 IDI to drop into it. That engine was getting 22 mpg in my F250, so I want to haul a small camper and get some mpg's. really just looking for something fun to do with this engine.
     
  7. Frank Swygert

    Frank Swygert Active Member

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    It should fit, but will need a LOT of work. Having the entire donor vehicle helps. You'll have to change the entire fuel system (should be able to keep tank, but will need some mods) and the electronic system. Swapping computers may be a challenge -- most now sense a module in the instrument cluster so if you pull the computer you can't use it in another vehicle. You might have to use an aftermarket computer or get the factory ECU reprogrammed... unless you can swap the instrument clusters as well. You will definitely need to upgrade the front springs for the heavier engine, and maybe other suspension components. F-250s still use a Twin I-Beam front suspension, IIRC, not the double wishbone of the F-150/Expy.
     
  8. brhulen

    brhulen Member

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    Before you "drop" that 7.3 in there be prepared to spend tons of $'s! You're going from
    a 3\4 ton chassis into a 1\2 ton chassis and without changing the entire front suspension you're simply asking for trouble if it isn't done correctly. I also would be suspect about the frame and drive components. If you want to build an off road beast then the sky is the limit and the diesel would be a lot of fun. I've owned every generation of the diesels since 1984 and the 6.7 is by far the best. If I were looking for street performance and being old school i would put a built 460 in it. Best of luck and keep us posted with lots of photos!
     
  9. JasonH

    JasonH Full Access Members

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    Cheaper to build the 5.4 or get a 2015 and tune it. This isn't a drop in. The engines are completely different.
     
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