ooops.. wrong gears - Chevy and GMC Duramax Diesel Forum
Drivetrain Discussion on gearing, CV joints, driveshafts, axles, brakes, etc.

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post #1 of 121 (permalink) Old 01-15-2013, 05:58 PM Thread Starter
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ooops.. wrong gears

Hi so apparently my Dana 60 front has 4.10 and my stock rear has .3.73 or the other way around.... Anyways. Put it in 4wd. Didn't work.. busted the f outta my trans. Ext housing cracked and all that. Should i get all 4.10 or all 3.73.... And what's a good inexspensive spot? Yukon? Idk what to do

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post #2 of 121 (permalink) Old 01-15-2013, 06:00 PM
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Ouch man, that sucks. I would do 4.10s


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post #3 of 121 (permalink) Old 01-15-2013, 06:01 PM
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are you still running the tires in your sig? if so I would go 4.10's all the way around, it will be close to stock

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post #4 of 121 (permalink) Old 01-15-2013, 06:25 PM
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Quote:
Originally Posted by adamz View Post
Hi so apparently my Dana 60 front has 4.10 and my stock rear has .3.73 or the other way around.... Anyways. Put it in 4wd. Didn't work.. busted the f outta my trans. Ext housing cracked and all that. Should i get all 4.10 or all 3.73.... And what's a good inexspensive spot? Yukon? Idk what to do
Looks like you have big rubber in your avatar picture.

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post #5 of 121 (permalink) Old 01-15-2013, 06:36 PM Thread Starter
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Yeah i still have the same rubber. 325 80r 16 from falcon wildpeak.... I want 40s cause I can clear em.... But ima broke mofo now. Lol ... Where should I grab the 4.10s from? Will i have better / worse milage? How hard is it to do the gears myself vs paying a shop... Or do one of you lovely Chicago native friends of mine wanna hangout drink beer amd turn wrenches

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post #6 of 121 (permalink) Old 01-15-2013, 07:16 PM
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4.10 will yield worse mileage than the 3.73s

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post #7 of 121 (permalink) Old 01-15-2013, 07:31 PM Thread Starter
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How much worse? And are 4.10 gears 4.10 gears? Or do i gotta get em specially for a Dana 60/44/30 or rockwell or whatever. I apparently don't know sheet about this

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post #8 of 121 (permalink) Old 01-16-2013, 04:13 AM
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If your thinking of going up to 40s I'd look into doing 4:56s.

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post #9 of 121 (permalink) Old 01-16-2013, 08:15 PM
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If your thinking of going up to 40s I'd look into doing 4:56s.
Agreed, if you go 40 I would go 456. If you do 4.10 with the 325 it will be close to stock so I don't think you will suffer to much on fuel mileage.

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post #10 of 121 (permalink) Old 01-17-2013, 04:36 AM
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Quote:
Originally Posted by anthonyshaw View Post
4.10 will yield worse mileage than the 3.73s
Unlikely with the tire size he is running.

Quote:
Originally Posted by adamz View Post
How much worse? And are 4.10 gears 4.10 gears? Or do i gotta get em specially for a Dana 60/44/30 or rockwell or whatever. I apparently don't know sheet about this
Gear sets are specific to the differential. Sometimes with changing ratios you need to change the carrier. I know the Dana 60 has a carrier break, might be 4.10 and down, without looking it up i dont remember. The 11.5 rear requires no carrier change for the available ratios.

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