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Old May 23, 2011 | 05:25 PM
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Limited SLip question...

I know that a Limited slip from a 10.5 superduty rearend will fit a 10.25 rear, my question is does it have to be from the same gear ratio?

Could I use a LS from a 10.25 rear with 4.10's in a 10.25 rear with 3.55's?

Or could I use one from a 10.5 rear with 3.73's in a 10.25 rear with 3.55's?
 
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Old May 23, 2011 | 05:35 PM
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Yes. You will need to change the pinion bearing and seal in order to use the 10.5 gears in the 10.25 rear end though.
 
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Old May 23, 2011 | 06:43 PM
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Ok, but a LS from a 10.25 rear with 4.10's would fit a 10.25 rear with 3.55's?
 
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Old May 23, 2011 | 06:53 PM
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As far as I know yes... but ask someone who's got more knowledge than me. Tjbeggs where are ya?
 
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Old May 23, 2011 | 08:05 PM
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Yes, you can use the limited slip with all gear ratios.
 
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Old May 23, 2011 | 08:18 PM
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the 10.5 and 10.25 carriers are interchangeable without issue. Chase is correct about the ring and pinion
 
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Old May 23, 2011 | 09:05 PM
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Ok, thanks fellas.
 
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Old May 23, 2011 | 10:54 PM
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thats what i went threw, got myself into a whole mess thinkig i can set my own backlash, its expensive ill tell ya that. not too many shops..actually 99& of shops dont do them because you need a few specialty tools. its not that bad once you figure it out.
 
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Old May 24, 2011 | 10:46 AM
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Originally Posted by rideracelivemx7
thats what i went threw, got myself into a whole mess thinkig i can set my own backlash, its expensive ill tell ya that. not too many shops..actually 99& of shops dont do them because you need a few specialty tools. its not that bad once you figure it out.
I was quoted $650 plus parts to install 3.73 gears in my truck... I think I'll live with crappy fuel mileage!
 
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Old May 24, 2011 | 10:58 AM
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Originally Posted by superduty4x4
I was quoted $650 plus parts to install 3.73 gears in my truck... I think I'll live with crappy fuel mileage!
Maybe the crappy fuel mileage is for the rims, bug deflector and sunvisor. IDK.
 
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Old May 24, 2011 | 11:21 AM
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Originally Posted by RÖENTGEEP
Maybe the crappy fuel mileage is for the rims, bug deflector and sunvisor. IDK.
Quit picking on my underpowered, fuel wasting ugly truck
 
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Old May 24, 2011 | 01:27 PM
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I'm happy with my 3.55 gears, just want both back tires spinning...
 
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Old May 24, 2011 | 01:49 PM
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so are the 3.55 gears or the 4.10's better for towing? I am sure I read this on another post somewhere but can't remember where...
Thanks
 
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Old May 24, 2011 | 02:00 PM
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4.10's are better. More rpms from the lower gear. Better take off power as the rpms come up quicker.
 
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Old May 24, 2011 | 02:06 PM
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sorry for the Evan... How can you tell what Gear ratio you have?
 
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