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Best for power and reliability? 6.2L or 6.5L

Discussion in '1982-Present GM Diesel' started by grimjaw, Mar 30, 2006.

  1. grimjaw

    grimjaw 1/2 ton status

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    I have been thinking about a GM diesel for my next project. What I want is good power, a durable engine, ok mileage and no electronics. For this which is better, the 6.2L (N/a or turboed) or a 6.5L turbo? I have not been able to fine a good listing for the base power and power with a mild build on these engines. Thanks for any help.




    I got a membership to The Diesel Page but I can not find what I am looking for.
     
  2. imiceman44

    imiceman44 1 ton status

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    The 6.5l is obviously better if you stay with 93 and earlier, if it's turbo even better.
    A 6.2 is not much further behind the 6.5 so it all comes back to the deals you can find.
     
  3. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    iirc, a 6.2 w/ a banks is more powerful than the 6.5 w/ the gm issue turbo.
     
  4. grimjaw

    grimjaw 1/2 ton status

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    Thats my understanding too. I just wanted ask, before making an expensive mistake. Thanks.

    I am still looking of power numbers for a 'mild' build.
     
  5. colbystephens

    colbystephens 1 ton status GMOTM Winner

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    not sure what a mild build means, tRustyk5 posted a dyno sheet up on a thread in the garage a while ago which essentially showed a turbo'd 6.2 to be 200+ hp and over 500 lbft @ the flexplate/flywheel. i believe that was on an old tired engine which they just added a banks to.
     
  6. grimjaw

    grimjaw 1/2 ton status

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    OK, that should more than cover it. thanks.
     

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