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1967 225 push rods

Discussion in 'Early CJ5 and CJ6 Tech' started by nmcgee, Mar 4, 2012.

  1. Mar 4, 2012
    nmcgee

    nmcgee New Member

    Cordele GA
    Joined:
    Feb 28, 2011
    Messages:
    17
    We got a 1967 CJ5 Friday. Walt and I got it running after a couple hours. I thought these engines had solid push rods but this one has hollow rods. Which ones should it have?
    [​IMG][/IMG]
     
    nmcgee, Mar 4, 2012
    #1
  2. Mar 4, 2012
    jpflat2a

    jpflat2a what's that noise?

    Hermosa, SD
    Joined:
    Jul 30, 2003
    Messages:
    8,520
    me no see 225
    me see maybe 231
    stamped iron vs cast aluminum rockers
    maybe me wrong
     
    jpflat2a, Mar 4, 2012
    #2
  3. Mar 4, 2012
    djbutler

    djbutler Sponsor

    Rio Linda CA
    Joined:
    Nov 5, 2007
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    727
    No you not wrong. 231.

    Don
     
    djbutler, Mar 4, 2012
    #3
  4. Mar 4, 2012
    Patrick

    Patrick Super Moderator Staff Member

    Los Alamos, NM
    Joined:
    Sep 22, 2002
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    8,360
    Yep, that's a 231
     
    Patrick, Mar 4, 2012
    #4
  5. Mar 4, 2012
    nmcgee

    nmcgee New Member

    Cordele GA
    Joined:
    Feb 28, 2011
    Messages:
    17
    I think i have a lets use what parts we can find engines. casting numbers say it is a 225. Intake #1378704 Block # 1381623
     
    nmcgee, Mar 4, 2012
    #5
  6. Mar 4, 2012
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
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    12,529
    Looks like someone put 231 heads on a 225 block. That is definitely 231 valve train. The 225 used solid pushrods and the rockers were oiled through the rocker shafts. The 231 oiled through the pushrods.


    Sent from my iPhone using Tapatalk
     
    nickmil, Mar 4, 2012
    #6
  7. Mar 4, 2012
    djbutler

    djbutler Sponsor

    Rio Linda CA
    Joined:
    Nov 5, 2007
    Messages:
    727
    Nick,
    Those heads look like the valve cover bolt holes are even top and bottom. If I remember right the 231 heads have those bolt holes offset?

    Don
     
    djbutler, Mar 4, 2012
    #7
  8. Mar 4, 2012
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
    Joined:
    Mar 29, 2007
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    5,922
    Also on these heads, the valve covers are 225. Don't have the 231 raised rib down the center of the covers.
     
    Walt Couch, Mar 4, 2012
    #8
  9. Mar 4, 2012
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
    Joined:
    Sep 22, 2002
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    5,349
    The 1st few years of 231 production shared the same valve cover bolt pattern, then when they were offset it was only like 1/4", which is why a lot of aftermarker vavle covers had slots in the top vavle cover bolt holes.
     
    Mcruff, Mar 4, 2012
    #9
  10. Mar 4, 2012
    nickmil

    nickmil In mothballs.

    Happy Valley, OR
    Joined:
    Sep 23, 2002
    Messages:
    12,529
    This. I just measure a loose 231 aftermarket vc I have and it's about 1/16" different from top set of holes to bottom.


    Sent from my iPhone using Tapatalk
     
    nickmil, Mar 4, 2012
    #10
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