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2.7 in dire need of gears! But how?

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Old 12-05-2012, 06:09 PM   #1
TacoXtreme [OP] TacoXtreme is offline
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2.7 in dire need of gears! But how?

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?
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Old 12-05-2012, 06:11 PM   #2
With sufficient thrust, pigs fly just fine.
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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.
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Old 12-05-2012, 06:54 PM   #3
TacoXtreme [OP] TacoXtreme is offline
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Quote:
Originally Posted by chris4x4 View Post
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.
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?
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Old 12-05-2012, 06:57 PM   #4
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What's sad is my 2011 is an A04B. 7.5" but a 4.56 4 pinion open
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Old 12-05-2012, 07:06 PM   #5
"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.
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Old 12-05-2012, 07:06 PM   #6
With sufficient thrust, pigs fly just fine.
chris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shed
 
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Quote:
Originally Posted by TacoXtreme View Post
What's sad is my 2011 is an A04B. 7.5" but a 4.56 4 pinion open
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.
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Old 12-05-2012, 07:08 PM   #7
With sufficient thrust, pigs fly just fine.
chris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shedchris4x4 is one of the sharper tools in the shed
 
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Quote:
Originally Posted by TacoXtreme View Post
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?
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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