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  1. J

    258 swap for 4.0

    Thanks for all the ideas... I'm leaning towards the Howell injection on top of a clifford manifold. DUI ignition and electric fan. My delema is the serpintine system, since nothing on my current setup will work. I guess i need a doner 4.0 to rob the pully's. any other thoughts? Thanks for your...
  2. J

    258 swap for 4.0

    Hi all, I have purchased a (bare) 4.0 long block that has been stroked to a 4.6 with roller rockers that i would like to install in my 74 cj that currently has a 258. Has anyone done this conversion that could advise me on the needed items to complete this prodject. Thanks, John
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