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Rear rebuild or upgrade? Help!!

Discussion in '1st Gen Builds (2000-2006)' started by Zach4x4, Apr 9, 2017.

  1. Apr 9, 2017 at 4:28 PM
    #1
    Zach4x4

    Zach4x4 [OP] New Member

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    Hello everyone,
    Yep, finally joined the Toyota Family and pretty much had this tundra dropped in my lap. Local Northern California gal needed to sell and I thought of it as an investment. 2000 trd 4x4 4.7 v8 automatic. Only 110k miles. But its been a rough road in these hills. Turn out that after a month of driving I need to replace the rear axle internal parts. Ill have the specs in a few hours when I get to work, where I left the paperwork from the shop. Maybe 411 x 309 gear ratio. Complete guess right now. $900 for the used parts. Or should I buy a new rear axle that is geared for both: some highway but mostly very hilly and gravel roads?
     
  2. Apr 9, 2017 at 4:38 PM
    #2
    Law323

    Law323 it’s only weird if you make it weird

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    2012 4.6 L MGM DC
    Toytec BOSS suspension lift @ 3" (front) Toytec BOSS remote resi's (back) 1" Toytec block (rear) 275/70r18 Toyo AT2 Info system mod 3D MAXpider Kagu floor mats LED interior lights 50% ceramic tint front windows 35% ceramic tint windshield brow Bed mounted YETI bottle opener Paracord wrapped oh Sh!t bars 3" stubby antennae TRD sway bar Upcoming: LED backup lights OEM Backup camera Iron Cross Patriot step bars Trifold or roll up tonneau cover
    Could just buy lockers and 4.33 gears! Might run you a little more but since you're in need of a replacement...why the hell not??
     
  3. Apr 9, 2017 at 4:40 PM
    #3
    Zach4x4

    Zach4x4 [OP] New Member

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    I have a
     
  4. Apr 9, 2017 at 4:42 PM
    #4
    Zach4x4

    Zach4x4 [OP] New Member

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    Mechanic that is going to work on it soon so where should I buy these parts or what should I tell them to order if I stay in the $1200 range?
     
    Zmoody101 likes this.
  5. Apr 9, 2017 at 7:56 PM
    #5
    landphil

    landphil What do maple trees put on their pancakes?

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    Check out east coast gear supply for an exchange drop-in diff. You'll save a lot over the numbers you are throwing around, once your core is returned and credited.

    The gear ratio needs to remain the same for a 4x4, unless you regear both diffs. From what I could find, your truck should have 3.91 gears. Your rear diff is known as an 8.4", even though the ring gear measures 8 inches

    The advantage to regearing to a lower ratio (bigger number) is to accommodate larger tires - both correcting for the change in distance traveled per rotation, and the added torque required to accelerate heavier tires.
     
    Last edited: Apr 9, 2017

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