4.7 swap

Discussion in 'KJ General Discussion' started by Dunekj, Jul 8, 2017.

  1. libordemise

    libordemise Full Access Member

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    I'm bad for that, sorry op

    Sent from my LG-K210 using Tapatalk
     
  2. PsychoTrucker

    PsychoTrucker New Member

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    So Honduras, how hard of a swap was it??
     
  3. tommudd

    tommudd Moderator Staff Member Moderator

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    He has been gone for years, sold off the project
     
  4. Aceofspades

    Aceofspades Full Access Member

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    More interested to see the rest of the how-to....
     
  5. tommudd

    tommudd Moderator Staff Member Moderator

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    Some on LOST but no one place has the full story, had to of followed along during his build time
     
  6. Aceofspades

    Aceofspades Full Access Member

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    Thoughts on a stand alone ecu and LS swap? ;)
     
  7. jeeplib05

    jeeplib05 Full Access Member

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    Not worth the hassle
    If no swap has been completed by now there won’t be one.
     
  8. tommudd

    tommudd Moderator Staff Member Moderator

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    After you do a SFA, of course stronger transmission, rebuild / upgrade transfer case and other items , then start trying/ doing your LS swap
     
  9. JasonJ

    JasonJ Full Access Member

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    I wouldn't be surprised if something similar to an LS level swap would torque the entire subframe/body and twist it permanently.

    Kind of like too much engine on a small airframe airplane... not designed to handle those stresses and it will just flex and twist, resulting in failures elsewhere.
     
  10. sota

    sota Full Access Member

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    only swap I see as being worth the hassle is the 2.4L turbo motor swap.
     
  11. tjkj2002

    tjkj2002 Full Access Member

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    Somewhere between being sane and insane!
    The KJ's structure is 300% stiffer then the XJ's,SFA'd and at full stuff I still could easily open and close every single door(no twisting at all).
     
  12. JasonJ

    JasonJ Full Access Member

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    That's reassuring. And I'm sure others have stuffed 400hp engines into XJ's before successfully, so the KJ body structure should handle it as well...

    Not that I really need it to, as I plan to retain the stock powertrain myself.
     
  13. tjkj2002

    tjkj2002 Full Access Member

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    I know of 1 KJ with 500+HP(modded 6.1 HEMI),was professionally built and was shipped outside of the US,the owner wanted it all hush,hush so your not going to find much about it.It was SFA'd also,the only way to properly fit a V8 into a KJ.
     
  14. JasonJ

    JasonJ Full Access Member

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    Well, when you can afford to have such a thing professionally built and modified, then shipped across the globe, you can do pretty much whatever you want.

    But that just goes to support what we've been telling everyone who ever posted "how can I swap X motor into my KJ?" ... you can swap in pretty much whatever the heck you want.. if you can afford it.

    From what I've seen over the years, a SFA'd KJ performs very very well. Makes me wonder what if- if the KJ had been equipped as such in production.

    Probably was purposely not SFA in order to not take away from prospective Wrangler buyers.
     
  15. Joenavy85

    Joenavy85 Full Access Member

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    currently working a 5.3L LS for mine, easier now that the factory trans died and I have a different vehicle to drive. Won't have to worry about SFA since it's RWD. Won't be able to do much work on it due to minimal garage space, though i should have the engine rebuild done by spring, possibly the trans as well.
     
    Last edited: Nov 27, 2018