Cat 3126e flywheel identification help

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Gurbaz601, Jan 28, 2026.

  1. Star Rider

    Star Rider Road Train Member

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    Now that we have more information we can help better.
    Besides the wiring nightmare you have ahead of you.
    What is the difference in lengths of the 2 motors?
    You will be hating life by the time you get this swap done.
     
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  3. Star Rider

    Star Rider Road Train Member

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  4. Gurbaz601

    Gurbaz601 Bobtail Member

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    Its just joy ride project long running
     

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  5. SmallPackage

    SmallPackage Road Train Member

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    Im betting thats out of an rv/bus that is built on a Frieghtliner chassis. Those were the only 320-350hp 3126’s that i know of built as a truck engine.
     
    Last edited: Jan 30, 2026
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  6. W923

    W923 Road Train Member

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    That truck has/had a 7.3idi???
    That cat should fit nicely in it with minimal physical problems.
    With a manual transmission electrical problems should be minimal.
    A dt466 would be easier though as you could get it in that truck new….if you’re after power and not concerned about engine life the dt will make more power for less $$
     
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  7. W923

    W923 Road Train Member

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    Assuming you were thinking he was going to put it in a pickup….it’s been done before….there’s pictures to prove it…. I started but never finished one about 10 years ago. It seemed to be on track to work with some headaches but I decided my time was better spent on other things and actually sold it unfinished…i have no idea how it turned out or what ended up happening with it
     
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  8. Star Rider

    Star Rider Road Train Member

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    I wasn't saying it can't be done, anything can be done with enough stubbornness and $$$. That's why I also mentioned a dt466 earlier.
    With a dt or another 7.3 all the little stuff, rad hoses, harnesses, TPS, CAC hoses, mounts, etc. can be had off the shelf.
    With the 3126 not so much.
     
    Last edited: Jan 30, 2026
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