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Changing Rear end gear ratios

Discussion in 'Technical Chat' started by hwy17cruzer, Jul 30, 2010.

  1. Jul 30, 2010 at 10:14 AM
    #1
    hwy17cruzer

    hwy17cruzer [OP] Member

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    Tacoma Forum; I just hop'd over from the towing section, and I'm new. I'm researching changing the rear end gearing in an 06 Tacoma 2wd 5sp 2.7ltr access cab. Looks to be a A05A Rear end according to the plate. According to my research on the web that'd be a 3.15 ratio. I think that's the highest offered? So to get more low end oomph at the boat ramp how low should I go? Looks like 3.42, 3.58, 3.91, 4.10, 4.30, 4.56 are offered as available options...... I'm thinking a real Granny gear for 1st and boat ramps, then use 2nd-5th for commuting like a 4 spd. Is this a reasonable idea?
     
  2. Jul 30, 2010 at 10:36 AM
    #2
    afd23a

    afd23a Well-Known Member

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    The Dynamo of Dixie
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    Factory Fog Lights, Removed Secondary Air Filter, Metra Ipod Adapter, Int Wiper Stalk, Wet Okole's, URD Short Shifter, Scanguage II w/Blendmount, Fat Bob's 2.75" spacer lift, ARE topper, SP Performance Pads & Slotted Rotors, 4.10 gears
    From what I've found aftermarket gears start at 4.56 and go up. If you can find a used set from another 2nd gen Taco that opens up your options to 3.31, 3.58, 3.73, and 4.10.

    5 lug w/manual tranny: 3.31
    5 lug w/auto tranny: 3.58

    6 lug 4cyl prerunner or 4wd: 4.10
    6 lug v6 prerunner or 4wd: 3.73

    I've heard it said that the 3.73 and 4.10 gears won't fit in the 5 lug carrier, so the only way to run those ratios would be to get a fully assembled third member from a 6 lug. This has been disputed and I'm not sure if it is actually true for the 2nd gen tacomas.
     
  3. Jul 30, 2010 at 1:31 PM
    #3
    hwy17cruzer

    hwy17cruzer [OP] Member

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    So on my 5 lug I presume I then have 3.31 and3.58 as sure options?
    Hey, 5 lug refers to the lug nuts on the wheel hubs right?
     
  4. Jul 30, 2010 at 1:41 PM
    #4
    afd23a

    afd23a Well-Known Member

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    The Dynamo of Dixie
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    Factory Fog Lights, Removed Secondary Air Filter, Metra Ipod Adapter, Int Wiper Stalk, Wet Okole's, URD Short Shifter, Scanguage II w/Blendmount, Fat Bob's 2.75" spacer lift, ARE topper, SP Performance Pads & Slotted Rotors, 4.10 gears
  5. Aug 2, 2010 at 11:27 AM
    #5
    panacea

    panacea WESTCHESTER SALTY TACO

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    I have an 07 prerunner sr5 2.7 5 speed 6 lug and would like to install a 3.15 according to my vin I have 3.73 and I dont like it and would like to change it
     
  6. Aug 3, 2010 at 5:46 AM
    #6
    hwy17cruzer

    hwy17cruzer [OP] Member

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    Lower Rpms; What are your operational RPMs ? I'm thinking of the 3.58...
     
  7. Aug 3, 2010 at 3:54 PM
    #7
    panacea

    panacea WESTCHESTER SALTY TACO

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    I will be dropping in an Alpine Supercharger and I want to cruise below 2000 rpms at 70
     
  8. Aug 3, 2010 at 4:02 PM
    #8
    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.
    The 2.7's have a 4.10 ratio
     
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