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gear box upgrade

Discussion in 'Experienced Truckers' Advice' started by alexchalyi, Nov 21, 2016.

Page 4 of 4
  1. Nov 22, 2016 #31
    snowwy

    snowwy Road Train Member

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    Unless your truck is broke down. Don't bother Handing over $500 or whatever for nothing.
     
    snowwy, Nov 22, 2016
    snowwy, Nov 22, 2016
    #31
    blairandgretchen Thanks this.
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  3. Nov 22, 2016 #32
    Toomanybikes

    Toomanybikes Road Train Member

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    Your fuel economies are not that bad when measured against real world numbers. If you believe the super truckers that spout the factory lie-o-meter gauges in their dash your figures are way off. So I guess it depends who you ask?

    Paccar regularly puts out a paper considering fuel efficiency. In all the testing they have done they claim that no driver beats the consistency of cruise control. So choose who you you get your information from.
     
    Toomanybikes, Nov 22, 2016
    Toomanybikes, Nov 22, 2016
    #32
    snowwy Thanks this.
  4. Nov 23, 2016 #33
    alexchalyi

    alexchalyi Bobtail Member

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    Nov 3, 2016
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    my friend has volvo 2006 , with Cummins isx and he has 7mpg , with 3.55 rear ends and 425 hp and 13 speed tranny
     
    alexchalyi, Nov 23, 2016
    alexchalyi, Nov 23, 2016
    #33
  5. Nov 23, 2016 #34
    sdaniel

    sdaniel Road Train Member

    5,511
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    Sep 7, 2011
    Pelham N.C.
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    Factory specks on pressure loss is like 5 psi over 30sec. Or some silly rate , any loss is to much.
     
    sdaniel, Nov 23, 2016
    sdaniel, Nov 23, 2016
    #34
    blairandgretchen Thanks this.
  7. Nov 23, 2016 #35
    sdaniel

    sdaniel Road Train Member

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    Pelham N.C.
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    Depending on overdrive ratios , it may be 0% gain in mileage.
     
    sdaniel, Nov 23, 2016
    sdaniel, Nov 23, 2016
    #35
    blairandgretchen and wore out Thank this.
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