Gas to Diesel Swap - Chevy Silverado

Discussion in 'GM Diesel & DuraMax' started by Whitey79, Jun 16, 2010.

  1. Whitey79

    Whitey79 New Member

    coming up real soon im planning on swaping the 350 gas, 2WD automatic engine in my 2500 silverado to what i want to be duramax 4WD 6 speed allison looking for ideas and or tips on how to go about doing this...and sites or trans codes or anything would be greatly appriciated
    Last edited: Jun 16, 2010
  2. Joeairforce

    Joeairforce Epic Member 5+ Years 100 Posts

    What year is your truck?
  3. ChevyFan

    ChevyFan The Sheriff Staff Member 5+ Years 1000 Posts

    More details are needed here. Year/Make/Model/Configuration of your truck is a good place to start.
  4. Whitey79

    Whitey79 New Member

    1992 chevy silverado C2500 with the 350 Vortec and 5 speed auto trans, i wanna convert it to a K and do an engine swap from the 350 to a duramax with a manual allison trans, which duramax and trans should i be looking for, and any other tips or problems i may run into

    p.s. joe im in the active duty air force too :p
  5. 2COR517

    2COR517 Epic Member 5+ Years 1000 Posts

    Vortec in a 92? Five speed auto? Interesting

    Duramax, Allison, and add 4wd? I know there's a coolness factor to these kind of projects, but unless the parts are basically given to you, it will never pay. Remember you could wreck on the first trip out. Insurance is going to pay for a 92 Chevy pickup.
    Last edited: Jun 17, 2010
  6. Whitey79

    Whitey79 New Member

    i could wreck it anytime really, and chances are im gonna convert it to a K series first then start looking for the duramax and trans, does that sound like a bad project?
  7. 2COR517

    2COR517 Epic Member 5+ Years 1000 Posts

    Nothing wrong with the project. I presume you intend to do a solid front axle? Might as well make it a D60 considering the Dmax and Allison in future plans.

    Who put the Vortec, and presumably Allison, five speed in?
    Last edited: Jun 17, 2010
  8. Whitey79

    Whitey79 New Member

    yes with the axle, im not sure about the vortec, the owner before my dad owned it had it special ordered with the parts that it has on it, or the engine and trans really
  9. Crawdaddy

    Crawdaddy All hail the Mad King!! Staff Member 5+ Years 1000 Posts Platinum Contributor

    Converting a 2wd to a 4wd is no simple task. It takes a lot of work and precision, and figuring out what parts will do the job. I'm looking at doing a 4wd conversion on my suburban, but before I lift a wrench I'm going to have everything planned out perfectly. Things that can get you are things like how the lower suspension components are also the motor mounts, so you have to fabricate new motor mounts, the steering boxes are different, the spots to bolt spring hangers to will have to be measured and drilled, etc.
  10. Whitey79

    Whitey79 New Member

    as far as i know the holes for the front end leaf springs and axle (possibly) should be drilled already because of the fact that the truck was made to have 4WD because the frames are all made the same for those size least thats what ive heard, and what part of the suspension is for the motor mounts?

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