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2.7 in dire need of gears! But how?

Discussion in '4 Cylinder' started by TacoXtreme, Dec 5, 2012.

  1. Dec 5, 2012 at 6:09 PM
    #1
    TacoXtreme

    TacoXtreme [OP] North Georgia Member

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    Adam
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    ive got a 97 taco LX 4x4, 5 speed extended cab on 31's and it struggles. Pretty sure stock gears are 3.56. I wanna do 4.10's. Im no gear guru but ive researched and the only topic I found wasn't so helpful or explanatory. Can you swap 4.10's from a TRD to an LX???? Front and rear? Just rear?
     
  2. Dec 5, 2012 at 6:11 PM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    FlimFlubberJAM
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    4.10 gears, sliders, and lots of buttons.
    Check out the gear ratio code on the door jamb, to see what you have already.

    The axle code for your rig can be found on the manufacture's sticker located on the driver's side door jamb as follows:
    First digit:

    Next two digits:

    • 01 = 3:42
    • 02 = 3:58
    • 03 = 4:10
    • 04 = 4:56
    • 05 = 3:15
    • 06 = 3:91
    • 07 = 4.30
    Last digit:

    • A = 2 Pinion, Open
    • B = 4 Pinion, Open
    • C = 2 Pinion OEM Limited Slip
    some '98-00 models have shown a BO code of "???" on the door plate; so far this turns out to be a 3.91 gear ratio, at least for the 5sp. RZN171L-CRPDKAB with factory 31s/265s should be 4.56 with the AT.
    Edit by Ed Quinones on 10-7-05: I used to own a 99 Prerunner ext cab 2.7L with auto tranny and gear code of B07A. It came from the factory with a 4.56 gear ratio.
     
  3. Dec 5, 2012 at 6:54 PM
    #3
    TacoXtreme

    TacoXtreme [OP] North Georgia Member

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    Bull Bar, Borla Exhaust, Pro Comp Emplorer 55's, Daystar 2 1/2" leveling kit, UWS Toolbox, Bed Extender, Anytime Fog Light mod.
    So my 97 reads. B02A. 8" 3.58 2 pinion open. And reads RZN171L-CRMDKAB

    See mine didn't come with 31s I don't believe. Plus I have steel wheels. So find a 4.10 8" out of a TRD and it'll swap out right?
     
  4. Dec 5, 2012 at 6:57 PM
    #4
    TacoXtreme

    TacoXtreme [OP] North Georgia Member

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    Bull Bar, Borla Exhaust, Pro Comp Emplorer 55's, Daystar 2 1/2" leveling kit, UWS Toolbox, Bed Extender, Anytime Fog Light mod.
    What's sad is my 2011 is an A04B. 7.5" but a 4.56 4 pinion open
     
  5. Dec 5, 2012 at 7:06 PM
    #5
    BuzzardsGottaEat

    BuzzardsGottaEat "Pick up some speed.. You'll make it."

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    Can't you just order gears and install kits from ECGS and have them installed rather than swap whole 3rds? By all means, if you can find it that way cheaper go for it though.
     
  6. Dec 5, 2012 at 7:06 PM
    #6
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    FlimFlubberJAM
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    4.10 gears, sliders, and lots of buttons.
    second gens are either a 4.10 (2.7 engine), or 3.73 (4.0 V6). The code only applies to tacomas built before 2005.
     
  7. Dec 5, 2012 at 7:08 PM
    #7
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

    Joined:
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    FlimFlubberJAM
    Tenoe, AZ
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    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    It should. Or, look for the Bo7A out of a 2000. Thats a 4.30 gear, and good with 32's.
     
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