changing rear ends

Discussion in 'Trucks [ Eighteen Wheelers ]' started by jander, Apr 6, 2014.

  1. sdaniel

    sdaniel Road Train Member

    5,511
    4,420
    Sep 7, 2011
    Pelham N.C.
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    Never light , eastern half of the country . Half time in the mountains . 2011 freightliner , DD15 , 10 sp, 3.42 rears , (lite foot) . That week was mostly flat ground, that said, know some pickup owners that would like to see 10+ MPG !
     
    rollin coal and mp4694330 Thank this.
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  3. jander

    jander Bobtail Member

    39
    1
    Aug 15, 2010
    miami FL
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    well guys this was my first week with the new 3.36's..i run 80.000 all week...detroit 60 575 with 1850lbs of torque with one of those 9 speed converted to 13 speed and 3.36's.....and i did worse in fuel...1450 at 68 i did 5.3...i dont know what to do anymore
     
  4. jander

    jander Bobtail Member

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    Aug 15, 2010
    miami FL
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    ###### man...
     
  5. Oscar the KW

    Oscar the KW Going Tarpless

    12,247
    28,119
    May 19, 2011
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    Did you have the new rear end ratio updated in the ECM? If not then your mileage is not going to be accurate and will obviously throw off what you THINK you are getting for fuel mileage.
     
  6. hatlesstrukr

    hatlesstrukr Light Load Member

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    Jan 30, 2010
    El Paso, TX
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    ECM reported fuel avg cannot be trusted. Are you using Fuelgauges to track your mileage or manually?
     
  7. donnie189

    donnie189 Bobtail Member

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    Apr 12, 2014
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    My '88 Pete' was a road tractor, the rearends don't lock like a dump truck should, anybody know the ideal Eaton, rearends, I'd want, I got the Hendrickson spring alreadt, tomorrow they'll install a 20K ridgid dually pusher. Anyonr have any suggestions or parts?

    Thanks,

    Donnie189@yahoo.com
     
  8. jander

    jander Bobtail Member

    39
    1
    Aug 15, 2010
    miami FL
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    tommorrow monday im taking it to the guys to do that
     
  9. jander

    jander Bobtail Member

    39
    1
    Aug 15, 2010
    miami FL
    0
    manually...
     
    hatlesstrukr Thanks this.
  10. snowblind

    snowblind Heavy Load Member

    775
    636
    Jan 29, 2011
    conover nc
    0
    i wish i got the mileage it said on dash,but manually e model cat 4.7-5.5
     
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