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Will a 8.5 ring and pinion fit in a 7.625 axle housing

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Old 05-12-2019, 11:23 AM
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Default Will a 8.5 ring and pinion fit in a 7.625 axle housing




I have a 2000 4 door ls itís my baby the ring and pinion letís just say pinion is practically smooth will a 8.5 inch ring and pinion fit in the same housing I recently lost my job and Iím trying to start my own business and thatís my only ride and is going to be my poster child for my business please help Iím needing to go as cheap as possible right now and I can find 8.5 rears that I can just have
 

Last edited by Whitt Chaney; 05-12-2019 at 11:28 AM.
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Old 05-12-2019, 11:40 AM
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I'm not expert, but I'm gonna go with no.

Go to a junk yard, match up rpo codes to ensure the right ratio, and pull one there. Or just swap the whole rear
 
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Old 05-12-2019, 11:48 AM
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Iím not worried about ratio itís not a 4 wheel drive anymore
 
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Old 05-12-2019, 11:50 AM
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Originally Posted by Whitt Chaney View Post
Iím not worried about ratio itís not a 4 wheel drive anymore
Yeah, but it'll throw off the transmission shift points and speedometer if you change it
 
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Old 05-12-2019, 11:54 AM
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Oh gotcha
 
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Old 05-12-2019, 03:01 PM
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Also swapping out the internals isn't as simple as just unbolting and slapping new parts in, pinion has a crush/thrust washer that needs to be torqued in, The carrier needs to be shimmed into the diff housing to set the contact/wear ratio for the ring and pinion and side bearing torque set.
Your cheapest and best bet is check rpo codes and swap the whole diff.
 
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Old 05-12-2019, 03:15 PM
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Iím just going with swapping the ring and pinion gears and weld the spider gears and honestly I canít afford that
 

Last edited by Whitt Chaney; 05-12-2019 at 03:17 PM. Reason: Pressed done before I was
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Old 05-12-2019, 04:15 PM
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Originally Posted by Whitt Chaney View Post
Iím just going with swapping the ring and pinion gears and weld the spider gears and honestly I canít afford that
My advice is NO esp welding the spider gears, You think your broke now wait tell things start exploding ...
Even swapping the ring and pinion they still need to be set up and adjusted.
Welding the spiders maybe fine for a drag car that never turns and just goes in a straight line but don't work well for a street car .......
 
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Old 05-12-2019, 04:41 PM
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Hereís the thing Iím jobless right now and the only income I have is what my gf makes working part time Iím trying to get another job but canít until itís fixed im a diesel technician just fell upon hard times for a bit Iím doing short term and as cheap as possible
 
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Old 05-12-2019, 07:10 PM
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Do NOT weld the spiders on anything you're gonna drive on the street.

How familiar are you with setting up a differential? An r&p swap isn't exactly a bolt it deal
 

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