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1974 Jeep CJ5 Engine Question

Discussion in 'General Jeep Discussion' started by jschneider999, Sep 2, 2020.

  1. Sep 2, 2020 at 11:01 AM
    #1
    jschneider999

    #1
    jschneider999 [OP] Member

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    I have a 1974 Jeep CJ5 with a V8 engine, this is the original engine that came with the vehicle.
    I want to swap it out with a V6 engine for off-roading.
    I would like to do as little work as possible, IE. Pull engine replace with new engine.
    Is this possible if I find a 1974 Jeep CJ5 V6 or is there more to it than that?
    Any/all advice is appreciated, thanks in advance.
     
    jschneider999, Sep 2, 2020
    #1
  2. Sep 2, 2020 at 11:54 AM
    #2
    LYFZGOOD

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    LYFZGOOD members

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    Welcome from North Central West Virginia
    I don’t think they had V6 back in 1974 in a CJ5
     
    LYFZGOOD, Sep 2, 2020
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  3. Sep 2, 2020 at 12:01 PM
    #3
    Jim Beam

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    Jim Beam Well-Known Member

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    The CJ5 used the Buick 225 V6 from '66 thru '71. A great engine with the H.E.I. ignition, with lots of torque. Although a slight down grade from a V8. I am sure it would be a direct bolt in. Just extend the fan length.
     
    Jim Beam, Sep 2, 2020
    #3
  4. Sep 2, 2020 at 12:13 PM
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    LYFZGOOD

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    LYFZGOOD members

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    I did not know that I didn’t think V sixes came around until in the 80s. My bad
     
    Last edited: Sep 10, 2020
    LYFZGOOD, Sep 2, 2020
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  5. Sep 3, 2020 at 8:23 AM
    #5
    jschneider999

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    jschneider999 [OP] Member

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    Thanks Jim, is there an easy way to extend the fan length?
     
    jschneider999, Sep 3, 2020
    #5
  6. Sep 3, 2020 at 9:28 AM
    #6
    aggrex

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    aggrex Well-Known Member

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    Extending the fan shroud might be needed too.
     
    aggrex, Sep 3, 2020
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  7. Sep 3, 2020 at 12:50 PM
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    Jim Beam

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    Jim Beam Well-Known Member

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    A local auto parts should have a cooling fan extension spacer. I installed one on my CJ to convert from the clutching style fan to a fixed fan for crawling in the desert. Although you might be able to move your radiator closer to the engine as your CJ is designed to accept a four cylinder engine. The fan should be about an inch away from the radiator to account for fan flexing.
     
    Jim Beam, Sep 3, 2020
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  8. Sep 10, 2020 at 11:01 AM
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    jschneider999

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    jschneider999 [OP] Member

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    Does anyone have a recommended manual to purchase like Chiltons/Haynes/etc.
     
    jschneider999, Sep 10, 2020
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  9. Sep 13, 2020 at 12:34 AM
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    jeepnik

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    jeepnik Member

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    Both and scout around for a manufacture's shop manual.

    While you're at it try to find an older Jeep Bible. Beyond the practical knowledge the adventures of Super Pup and quite entertaining.
     
    jeepnik, Sep 13, 2020
    #9
  10. Oct 15, 2020 at 9:53 AM
    #10
    jschneider999

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    jschneider999 [OP] Member

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    I have another question. This jeep has a 3 speed manual transmission. To remove the engine I'm not sure how to disconnect the transmission from the engine. I see what looks like an inspection plate (see picture) between the oil pan and the manual transmission box. Will I be able to disconnect the transmission once I remove the inspection plate? Any info on how to remove the clutch connection would be helpful as well.

    jeep picture.jpg
     
    jschneider999, Oct 15, 2020
    #10
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