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Engine ID help

Discussion in 'Early CJ5 and CJ6 Tech' started by wlkrpines, Sep 29, 2010.

  1. Sep 29, 2010
    wlkrpines

    wlkrpines Member

    FERNDALE, MT
    Joined:
    Mar 22, 2008
    Messages:
    61
    After reading the tech section on casting numbers and parts interchange, I could still use some help.

    I have swapped in a 231 for the 225. I thought it was from an 81 Regal.

    The casting #'s show it could be either a '77 odd fire or a 77-78 even fire.

    Block numbers- 1261438
    Heads- B 1257051

    What confuses me more is the intake #25506510

    The 255 casting series would be the 79-81 that I thought it was, or does that not make any difference?

    Do I just need to pull the pan to look at the crank, or is there an easier way to ID I am overlooking.

    Any help is much appreciated.

    Greg
     
    wlkrpines, Sep 29, 2010
    #1
  2. Sep 30, 2010
    sparky

    sparky Sandgroper Staff Member Founder

    Perth, WA
    Joined:
    Sep 20, 2002
    Messages:
    9,221
    distributor
     
    sparky, Sep 30, 2010
    #2
  3. Sep 30, 2010
    wlkrpines

    wlkrpines Member

    FERNDALE, MT
    Joined:
    Mar 22, 2008
    Messages:
    61
    After looking at the distributor, it looks like an even fire.(thanks Sparky)

    I guess someone put a later model intake with a dualjet on it at some point. It looks to me like they started using it in '79, which would match to the casting on the intake.
     
    wlkrpines, Sep 30, 2010
    #3
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