Gearing??

5517 Views 28 Replies 10 Participants Last post by hytenor, Oct 10, 2006

TmudRroverD

Discussion Starter · Mar 7, 2005

***sorry i placed this thread in the wrong spot***

Hey, this is my first thread i have started but i need some help. I am going to be lifting my tacoma this summer. I was planning on doing a 3" body lift on it. I was going to run it on 33x12.50x15 bfg at. My truck has a 2.7L 4 cyl engine in it (auto trans), and i was wondering if anyone knew if i need to change the gearing. If i do need to change it, what should I be looking for and a ball-park price range to change it. Also I am going to be doing the lift myself and was wondering if anyone had any tips on any tricky parts to make eveything go just a little bit smoother. thanks a lot guys.
Brian

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hytenor

· #21 · Mar 21, 2005

GOT COPE? said:
not actual applications? to what? tacos? explain, thanks

you won't find all the BO codes that are listed on that list in the real world.

that part of the original chart..."using the above codes would result in thefollowing axle codes:" is an extrapolation of the first part of the BO data, just putting all the possible number/letter combinations on paper.

Since 4x4s and Prerunners all have the 8" rear diffs you won't see the 'AO__' code on any of them but in theory the 2.4L minis should have them since their rear ends are 7.5" for the most part.

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TmudRroverD

Discussion Starter · #22 · Mar 22, 2005

Thanks guys, i appreciate your help..
brian

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Ritchie

· #23 · Mar 23, 2005

I too have the 2.7l and A/T and have wondered what gears I have in my '03 reg/cab prerunner 2wd.

My door jam codes are:

RZ191L - TRPDKAB

C/TR 1C8/YA10

A/TM B07A/
A340E

Any clues?

My window sticker says I have 3:91's, but from what I have read here, I have 4"30's.

I need to re-gear due to my performance and mileage soon.

I sure hope someone has an answer.

Thanks.

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hytenor

· #24 · Mar 23, 2005

Ritchie said:
I too have the 2.7l and A/T and have wondered what gears I have in my '03 reg/cab prerunner 2wd.

My door jam codes are:

RZ191L - TRPDKAB

C/TR 1C8/YA10

A/TM B07A/
A340E

Any clues?

My window sticker says I have 3:91's, but from what I have read here, I have 4"30's.

I need to re-gear due to my performance and mileage soon.

I sure hope someone has an answer.

Thanks.

you should have 4.30s. toyota's website still shows all Tacomas as either having 3.91s (manual) or 4.10s (AT) even after 3 years of emails to them with corrections. they don't seem to care. the window sticker reflects the website's misinformation, unfortunately.

what size tires are you running now?

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ArmyoftheForest

· #25 · Sep 26, 2006

I know this is an old thread, but I am looking to regear as well, thinking 4.10's for my 245/75/16's. I have a 98 Tacoma 2.7L 5 speed with a lunchbox locker and I am running 3.58's. Now, I don't know if somebody regeared after the locker install, but fifth and somethimes fourth are useless.

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99FlowedTaco

· #26 · Sep 27, 2006

ArmyoftheForest said:
I know this is an old thread, but I am looking to regear as well, thinking 4.10's for my 245/75/16's. I have a 98 Tacoma 2.7L 5 speed with a lunchbox locker and I am running 3.58's. Now, I don't know if somebody regeared after the locker install, but fifth and somethimes fourth are useless.

I'm on 34 LTB swampers with 2.7 and 4.10's 4.10s are good up to 32's but dont go higher I have no 5th with 34's on

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hytenor

· #27 · Sep 27, 2006

ArmyoftheForest said:
I know this is an old thread, but I am looking to regear as well, thinking 4.10's for my 245/75/16's. I have a 98 Tacoma 2.7L 5 speed with a lunchbox locker and I am running 3.58's. Now, I don't know if somebody regeared after the locker install, but fifth and somethimes fourth are useless.

that's essentially a 31x9.50 why not go with a 265/70/16
regear to 4.30s for optimum and 4.10s for "ok".

jack up the rearend. make a white mark on the driveline and another on the tire. spin the tire counting dl revolutions for each full turn of the wheel. make 10 wheel revs and see how many dl revs you get. ex: 41 dl to 10 wheel will be 4.10s, 35.8:10 will be 3.58s

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clydeepants

· #28 · Oct 10, 2006

Sorry about the thread jack, but would an AT 3rd member be swapable into a MT truck. Im looking into getting a set from a 99 2.7L AT non-TRD. I own a 2.7L MT non-TRD. Would there be any differences in the diffs. Anything to look for before buying. Thanks for your guys help. Sorry again for the jack, i dont want to start another thread and this one is pretty close to what im talking about.

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hytenor

· #29 · Oct 10, 2006

clydeepants said:
Sorry about the thread jack, but would an AT 3rd member be swapable into a MT truck. Im looking into getting a set from a 99 2.7L AT non-TRD. I own a 2.7L MT non-TRD. Would there be any differences in the diffs. Anything to look for before buying. Thanks for your guys help. Sorry again for the jack, i dont want to start another thread and this one is pretty close to what im talking about.

rear diffs on the Tacos are all the same regardless of engine...either e-locker (TRD) or open or non-TRD. In your case any non-TRD 3rd will work.
just shop for the gear ratio you want.

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