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updated heads V6,225

Discussion in 'Early CJ5 and CJ6 Tech' started by beastmaster, Feb 10, 2008.

  1. Feb 10, 2008
    beastmaster

    beastmaster New Member

    Joined:
    Jan 13, 2008
    Messages:
    21
    Will early 70s heads off a 231 fit and replace my 1966, 225? I am rebuilding the motor but would like heads that can be used with unleaded gas. Is there any year thats better then a nather .Thank you for any help.
     
    beastmaster, Feb 10, 2008
    #1
  2. Feb 10, 2008
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    Welcome from Kansas!

    You'll get a better response with your post in the proper section. I moved it for you.

    If your 225 heads are in decent shape just have hardened valve seats put in them.

    There's other discussion here in the forum (Search) and some stuff in the tech section about swapping 231 heads onto a 225 if you think you really would like to do that.
     
    sparky, Feb 10, 2008
    #2
  3. Feb 10, 2008
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
    Messages:
    5,349
    I had hardened valve seats put in my heads when I rebuilt it 3 years ago. No real need to go to the trouble of finding different heads for this unless you just want to. Your factory heads can be updated quite easily.
     
    Mcruff, Feb 10, 2008
    #3
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