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14 bolt 10.5 rebuild questions

Discussion in 'Differential & Driveline' started by marks86, Nov 17, 2019.

  1. marks86

    marks86 Full Access Member

    Age:
    27
    Posts:
    1,502
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    66
    Joined:
    Feb 2, 2011
    Location:
    Latham, NY
    First Name:
    Mark
    Truck Year:
    1986
    Truck Model:
    K30
    Engine Size:
    12v Cummins
    My 14 bolt is in need of a rebuild so Im going to buy new gears and master rebuild kit. My question is which brand would you guys recommend. Any experience using certain ones. I know the rebuild kit and gears both range in price.
     
  2. 1987 GMC Jimmy

    1987 GMC Jimmy Automobile Hoarder

    Age:
    22
    Posts:
    5,372
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    1,759
    Joined:
    Jan 23, 2016
    Location:
    Mississippi
    First Name:
    Jesse
    Truck Year:
    1987
    Truck Model:
    V1500 Jimmy
    Engine Size:
    350
    I went with Motive Gear, and the rear end shop who did mine said that was a good brand. Their emphasis was on using quality oil, a good limited slip additive, and playing by the rules during the break in period. This means stopping and letting it cool and not driving more than 55 during the first few drives, not to peel out or put any other undue load on it, and don’t tow any trailers for 750-800 miles IIRC. I’m not having any issues.
     

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