Cummins ISX to Cat engine conversion

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Aknapke1215, Dec 22, 2017.

  1. Aknapke1215

    Aknapke1215 Bobtail Member

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    Aug 6, 2013
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    Hey guys I have a 2010 Peterbilt 386 with a CM871 isx I'm toying with the idea of pulling the cummins out and putting in a 3406 cat. I'm just wondering if anybody has done this and what it costs by the time you buy the wiring harness and everything else needed to go from cummins to cat.
     
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  3. BigJw/ThePete

    BigJw/ThePete Bobtail Member

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    Apr 24, 2020
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    I just thought about doing the exact same thing to my 386. Engine has high crankcase pressure. Figured I’d rather spend the 15k on putting a cat in there! By any chance did you achieve everything you wanted in your post?. Idk like to know the exact same things you asked lol.
     
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