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Question about Rear-End Diameter...

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Old 07-17-2009, 12:52 PM   #1
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Question about Rear-End Diameter...

I searched for information on this but was not able to come up with anything definitive. Sorry if this has been discussed before.

I was looking into what it would cost for a gear swap down the line but since I'm new to Toyota's, I don't know what our rear-end size is. Does anyone know what the rear-end specs for the 4.0 4x4 TRD OR's are? Thanks!

Has anyone swapped to a 4.10/4.11? I'm not sure if it would be worth the money since we have 3.73's stock. I've always had 4.10's (or lower) in my previous vehicles and I'm kind of hesitant to get bigger tires with the 3.73's.
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Old 07-17-2009, 12:59 PM   #2
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Quote:
Originally Posted by 09WhiteTaco4x4 View Post
I searched for information on this but was not able to come up with anything definitive. Sorry if this has been discussed before.

I was looking into what it would cost for a gear swap down the line but since I'm new to Toyota's, I don't know what our rear-end size is. Does anyone know what the rear-end specs for the 4.0 4x4 TRD OR's are? Thanks!

Has anyone swapped to a 4.10/4.11? I'm not sure if it would be worth the money since we have 3.73's stock. I've always had 4.10's (or lower) in my previous vehicles and I'm kind of hesitant to get bigger tires with the 3.73's.
Should be 8" for all second Gen Tacomas

For a re-gear, I recommend these dudes

http://eastcoastgearsupply.com/

They did mine and installed my lockers at the same time. Really cool guys.
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Old 07-17-2009, 01:14 PM   #3
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This is probably more info than you need, but here's a complete guide to Toyota Diffs
http://home.4x4wire.com/erik/diffs/

Those 3.73 gears in the E-locker are notorious for breaking. Not that they do it alot, it's just that breaking the others is pretty much unheard of.
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Old 07-17-2009, 01:18 PM   #4
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Quote:
Originally Posted by oakleyTRD View Post
The OR (like drew said) has an 8" rear end and the Sports and Base models have 8.4" housings.
So the OR's have smaller rear ends than the base model??? That doesn't make sense.

How about up front? I forgot to ask about the specs for the front differential. Thanks for the quick replies!
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Old 07-17-2009, 01:20 PM   #5
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Quote:
Originally Posted by drew02a View Post
This is probably more info than you need, but here's a complete guide to Toyota Diffs
More info than I need....maybe. More info than I crave--definitely not!!! Thanks! This is exactly the kind of info. I was looking for!
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Old 07-17-2009, 01:23 PM   #6
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Quote:
Originally Posted by 09WhiteTaco4x4 View Post
So the OR's have smaller rear ends than the base model??? That doesn't make sense.

How about up front? I forgot to ask about the specs for the front differential. Thanks for the quick replies!
Actually, the ring gears are the same diameter (8") as you'll read on that site I gave you the link to. They just have different sized housings.
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Old 07-17-2009, 04:19 PM   #7
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Quote:
Originally Posted by drew02a View Post
Actually, the ring gears are the same diameter (8") as you'll read on that site I gave you the link to. They just have different sized housings.
they are the same diameter, but still stronger setup than the e-locker 8.0"

30 spline pinion is better than a 27 spline pinion

From that same website:
"- Carrier bearing truss and newer housing adds significant strength over V6 and 4cyl diffs"
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Old 07-17-2009, 04:44 PM   #8
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Quote:
Originally Posted by oakleyTRD View Post
sorry.... so is the ARB the same for the OR as it is for the sport??

I thought the 8.4" housing used a different ARB part number
There not the same, just the same size
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