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Coming back to GM diesel...

Discussion in '1982-Present GM Diesel' started by botboy, Sep 25, 2006.

  1. botboy

    botboy 1/2 ton status

    Aug 11, 2004
    Likes Received:
    Delano, MN, USA
    Long time lurker....posted for a while when I had my '83 K5 but a buddy blew the motor up and that was the end of that.

    Now I'm looking at an '87 K5, 6.2, 4x4 for $750 needs a starter. I've also got my name on (though I don't have it yet) a '93 MFI 6.5 NA diesel.

    Now I'm busy thinking over some possibilities and have a few questions...

    - what compression is the 6.5 NA going to have?
    - if I wanted to turbo it, could I add a turbo from a 6.5TD and leave the NA IP alone?
    - If not, will a turbo IP just bolt in? Or could the NA pump be rebuilt to work with a turbo setup?
    - are 6.2/6.5 motor mounts the same between the 2nd gen k5 and 3rd gen P30 van?
    - Do the 6.5 NA heads have the same reputation for cracking/leaking as the 6.2 heads did?
  2. azblazor

    azblazor 1/2 ton status Premium Member

    May 5, 2001
    Likes Received:
    Arizona, Phoenix area
    about 22:1

    Yes you could - but - the main point of adding more air with a turbo is to also add more fuel - too get more power.

    You don't need to replace the IP - just adjust the fuel delivery.

    The motor mounts should be the same - at least the motor part of them.

    Uh - pretty much. There is a pretty good fix if you have them off anyway.
  3. BKinzey

    BKinzey 1/2 ton status Premium Member

    Jan 13, 2006
    Likes Received:
    Hollywierd, CA
    2nd what he said.

    A '93 N/A 6.5 Blazer? Didn't know there was one.
  4. imiceman44

    imiceman44 1 ton status Premium Member

    Aug 5, 2002
    Likes Received:
    Sacramento, CA
    Actually there is but that's not what he has.
    He has a 93 6.5 NA from a P30 van and he's putting it in his 87 blazer.
    94 was the only year for a K5 with turbo 6.5 after that they axed the K5.

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