Replace

Discussion in 'Engine & Drivetrain' started by Rosson03, Mar 16, 2019.

  1. Rosson03

    Rosson03 Full Access Member

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    my engine and transmission are going to crap, what year engine what transmission should I replace without any modifications
    I did notice that there is a 10 speed how hard is that
     
  2. Big Mama

    Big Mama Full Access Member

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    Sorry didn’t see your year but are you looking for stock or more performance?
     
  3. Rosson03

    Rosson03 Full Access Member

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    2007 denali
    My bad
    I figured I got about 8 to 10k,
     
  4. Doubeleive

    Doubeleive Supporting Member

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    can you be more specific of what the problem is and what exactly you trying to accomplish? what makes you think you have 8-10k? we need a better description of the entire scenario
    specifically what is wrong with the engine and what is wrong with the transmission? what makes you think they need to be replaced versus repaired?
     
  5. Big Mama

    Big Mama Full Access Member

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    The 6.2 in your truck is hard to beat and the swap to an 8 speed trans would be tough. I’ve got the same rig and they’re hard to beat. What are the symptoms, miles, etc?
     
  6. Rosson03

    Rosson03 Full Access Member

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    8 to 10k bucks

    200k miles
    Lifter problem in the engine
    I feel like the transmission is going because it shifts really hard between 40 and 50 miles per hour
    Smoke all the time like a blue cloud
    And some other minor things
    First time ever having a vehicle over 200,000 miles and I feel like this engine is tired because and doesn't get up like it used to
    Also it eat oil like crazy
     
  7. Rosson03

    Rosson03 Full Access Member

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    What do you mean it's hard to beat and Tuff on a 8-speed
     
  8. thompsoj22

    thompsoj22 Supporting Member

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    JMO, $5,500 6.2 crate engine and $3,500 6L80E and down the road you go. Is 400 hp enough?
     
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  9. swathdiver

    swathdiver Full Access Member

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    You've got the best set up going. Now if you don't want to rebuild, just get a new crate engine and transmission from GM. Then decide if you want to add horsepower and or just a good tune.
     
  10. Big Mama

    Big Mama Full Access Member

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    How would the computer recognize the extra 2 gears and different shift points? Agreed though if you want all new stuff go GM crate with a warranty.
     

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