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REPLACING UPPER CONTROL ARMS?

Discussion in 'Suspension' started by Bam69limitedcrewmax, May 13, 2016.

  1. May 13, 2016 at 7:33 PM
    #1
    Bam69limitedcrewmax

    Bam69limitedcrewmax [OP] New Member

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    Vehicle:
    2008 limited crewmax 4x4 5.7L TRD
    2" leveling kit in front nothing to the back
    Is it really a must do replacing the upper control arms when adding a 3" or 4" lift? I understand they are stronger but can you still get the camber/caster correct if you don't replace with the uniball upper control arms and just use the factory uppers? thanks
     
  2. May 13, 2016 at 7:49 PM
    #2
    Sean266

    Sean266 #ThinBlueLine Staff Member

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    Colorado
    I did. On my last truck I didn't and alignment won't be as great....also needed to do it for the larger tires
     
  3. May 14, 2016 at 5:59 AM
    #3
    PlatinumPro

    PlatinumPro New Member

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    i had total chaos uca's on my previous truck and in addition to allowing the alignment to be returned to spec after a lift they also allowed about an inch more droop on each side.
    if you choose not to use them you'll notice the factory uca's going from sitting relatively flat in the wheel well to very angled once the lift is installed. this angle basically puts your truck on its tippy toes and limits the suspensions downward travel.
    bottom line... lifting 2-2.5 inches you'll get by without, lifting > 2.5 there is a good chance you need them and should consider it part of the cost of a proper lift.
     
    Bam69limitedcrewmax and csuviper like this.
  4. May 14, 2016 at 8:47 PM
    #4
    csuviper

    csuviper Moderator Staff Member

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    Broomfield, CO
    Vehicle:
    2012 Rock Warrior 5.7L 4X4
    Some Mods :) See build thread for details
    Agree with @PlatinumPro. I did get away without for almost 2 years but do think that the coilovers were set around 2.5" instead of 3. Jumped up to about 3.25" and went with Total Chaos UCAs.
     
    Bam69limitedcrewmax likes this.
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