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75 cj5 to 46 willys 2a power train swap?

Discussion in 'Flat Fender Tech' started by grog420, Jul 6, 2008.

  1. Jul 6, 2008
    grog420

    grog420 New Member

    redding ca.
    Joined:
    Jul 29, 2006
    Messages:
    35
    I just bought a 46 with no engine trans, or transfer case. I was wondering if my 75 cj5, 258 power train will fit? I know it probably wont bolt right in, but will work with a little fab?
     
    grog420, Jul 6, 2008
    #1
  2. Jul 6, 2008
    Boyink

    Boyink Super Moderator Staff Member

    Tulsa, OK
    Joined:
    Sep 20, 2002
    Messages:
    6,197
    The I6 would take some major hacking to get in there - either an extended grille or a big ole firewall hole. It's a poor choice for a repower IMHO.

    Either look for original stuff or go with a Buick or Chevy V6 - they'll fit much more easily.
     
    Boyink, Jul 6, 2008
    #2
  3. Jul 6, 2008
    grog420

    grog420 New Member

    redding ca.
    Joined:
    Jul 29, 2006
    Messages:
    35
    what junk yard doner vehicle would be a good canidate?
     
    grog420, Jul 6, 2008
    #3
  4. Jul 6, 2008
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    23,596
    Mike's right - it'd be a nightmare. Jeep had to stretch the engine compartment to make the 232/258 fit, as well as redesign the grille.

    Have you read Novak's site about Jeep engine swaps? http://www.novak-adapt.com/knowledge/engines_general.htm

    Buick V6s come from RWD Buicks, typically midsize or compacts (?). Chevy v6s were used in lots of Chevy vehicles - like the Astro van.

    The best donor would be a 66-71 CJ-5 with a V6, since that would provide engine, trans and transfer case. Unless you want to change axles, you'll need a Dana 18 transfer case, wwich is properly offset to match your rear axle. Pretty much any of the Jeep Borg-Warner 3-speed transmissions will work with little adapting.
     
    timgr, Jul 6, 2008
    #4
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