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Thread: 86 Chevy Caprice wagon

  1. #1

    Default 86 Chevy Caprice wagon

    I have a 86 Caprice wagon. I wanted to know how hard would it be to convert from a gas engine to a diesel and what do I need to convert it over?

    Right now I have a factory Olds 307 with 200 4 R trans with a 3.08 rear.

  2. #2
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    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  3. #3

    Default

    Is the 6.2 diesel that GM put in their light duty trucks? Or is it a early Duramax? Never mind I just answered my own questions.

  4. #4
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    6.2, which was the precursor to the 6.5 engine.

    The Duramax is an entirely different animal.
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  5. #5

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    Is this a direct bolt in or is the a few mods that I will have to do?

  6. #6
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    Definitely a "make it work as you have to" project. Even transplanting a diesel into a vehicle that had the diesel as an option takes a certain amount of work. Transplanting it into a vehicle that never had it as an option requires a certain amount of customization to make it work.

    You have a certain advantage in that the 6.2/6.5 has certain similarities to the GM gasser engines when it comes to bolt patterns and such - just because the trucks and Suburbans/Blazers came with both gas and diesel engines.
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  7. #7

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    Being new to diesels,can I get a Crate 6.2 GM diesel?
    Also will I need a ecm for this engine?

  8. #8
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    6.2 was mechanical injection. Early 6.5s were mechanical, but then went to electronic with an ECM. Chances are you aren't going to find a crate 6.2 as they haven't been used since '92.

    Penninsular Diesel offers crate 6.5s: http://www.peninsularengine.com/index.html

    Since you are converting a vehicle that didn't have a diesel to start with, the best course of action would be to buy a complete donor vehicle so that you can get all the associated parts. Otherwise you're going to be buying every little item separately.
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  9. #9
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    So IN.
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    Default

    i'm interested myself

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