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Swap rear ends or transmission?

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by greaseburner, Apr 2, 2018.

Page 1 of 5
  1. Apr 2, 2018 #1
    greaseburner

    greaseburner Light Load Member

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    Have a 95 KW W900L quad axle demo dump truck with a 3406 E, 3.55 402 rears . It has 650+ HP, so getting around in that regard isn't a problem, however with the current transmission and rear ends it's just plain geared too high for some of the terrain we run. I'd like to keep the ratio we run in high gear, but would prefer some better ratios for running on dirt than what we have. Any suggestions?

    Thanks
     
    greaseburner, Apr 2, 2018
    greaseburner, Apr 2, 2018
    #1
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  3. Apr 2, 2018 #2
    spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    What is current trans?
     
    Last edited: Apr 2, 2018
    spsauerland, Apr 2, 2018
    spsauerland, Apr 2, 2018
    #2
    Oxbow and SAR Thank this.
  4. Apr 2, 2018 #3
    Ezrider_48501

    Ezrider_48501 Road Train Member

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    i think a 9LL might be a good choice for that truck. or a 15speed
     
    Ezrider_48501, Apr 2, 2018
    Ezrider_48501, Apr 2, 2018
    #3
    SAR and spsauerland Thank this.
  5. Apr 2, 2018 #4
    greaseburner

    greaseburner Light Load Member

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    yup, forgot that I see.

    RTO15715

    Thanks
     
    greaseburner, Apr 2, 2018
    greaseburner, Apr 2, 2018
    #4
  7. Apr 2, 2018 #5
    catwrench55

    catwrench55 Light Load Member

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    Only real option for lower gear choices is an 18 speed then.
     
    catwrench55, Apr 2, 2018
    catwrench55, Apr 2, 2018
    #5
    Justrucking2 Thanks this.
  8. Apr 2, 2018 #6
    spsauerland

    spsauerland Road Train Member

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    West Harrison, In
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    Are you driving it or hired driver(s)?
     
    spsauerland, Apr 2, 2018
    spsauerland, Apr 2, 2018
    #6
    SAR Thanks this.
  9. Apr 2, 2018 #7
    swaan

    swaan Road Train Member

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    Rtlo 18 speed.
     
    swaan, Apr 2, 2018
    swaan, Apr 2, 2018
    #7
  10. Apr 2, 2018 #8
    special-k

    special-k Road Train Member

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    Southern Ontario Canada
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    Won't low gearin deep reduction in a 15 be almost the same as an 18 in low gear? Can't remember now lol getting old sucks
     
    special-k, Apr 2, 2018
    special-k, Apr 2, 2018
    #8
  11. Apr 2, 2018 #9
    swaan

    swaan Road Train Member

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    If I remember right low low in a 18 is even lower then his 15 and the splits are closer together too. So overall better for what he's doing
     
    swaan, Apr 2, 2018
    swaan, Apr 2, 2018
    #9
    SAR Thanks this.
  12. Apr 2, 2018 #10
    KB3MMX

    KB3MMX Road Train Member

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    18 Speed all the way.
    Most versatile trans. Can run as a 9, 13 or 18 ... Love Em.

    A 3.73 or 3.90 rear would be perfect though.
     
    KB3MMX, Apr 2, 2018
    KB3MMX, Apr 2, 2018
    #10
    Oxbow and swaan Thank this.
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