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04-03-2015, 08:22 PM
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#1 |
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Registered User
Join Date: Dec 2013
Location: monroeville nj
Posts: 4
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how do i find out what size rear is in my truck
Hi all i have a 1995 2500 chevy 4x4 pick up, is there a way to tell what rear i have? thanks!
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04-03-2015, 09:27 PM
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#2 |
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Senior Member
Join Date: May 2004
Location: Binghamton, NY
Posts: 3,485
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Re: how do i find out what size rear is in my truck
6 lug or 8 lug? 6 lug will be 14 bolt semi float, 8 lug could be 14 bolt semi float or a full floater....
__________________
2000 Chevy Tahoe Limited 3/5" drop 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon stock SAS 6" |
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04-03-2015, 09:48 PM
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#3 |
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Senior Member
 
Join Date: Nov 2003
Location: Brookings, SD
Posts: 10,498
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Re: how do i find out what size rear is in my truck
If your question is gears you can get really close by jacking it up and turning the tire and counting the driveshaft revolutions. Put the truck in neutral and block your tires. If it's an open rearend jack it up enough to get one tire off the ground. If it's a posi jack it up enough to get both tires off the ground. Mark the tire and the driveshaft. Turn the tire ten times and count the number of times the driveshaft turns. If the driveshaft turns 30 times you have around a 3.00 gearing (3.08 likely).
If I remember right on an open rearend you need to divide your answer by 2. So to keep it easy turn the tire 20 times, and then you can divide the driveshaft revolutions by 10.
__________________
Some people are like slinkies, they aren't good for anything, but you can't help but smile when you see one tumble down the stairs. |
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04-04-2015, 12:25 AM
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#4 | |
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Registered User
Join Date: Jan 2002
Location: Springville, UT, USA
Posts: 1,010
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Re: how do i find out what size rear is in my truck
Quote:
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04-04-2015, 07:31 AM
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#5 |
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Registered User
Join Date: Oct 2009
Location: .
Posts: 2,187
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Re: how do i find out what size rear is in my truck
Should be a 14 bolt, look at the bottom right 2 pictures.
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04-04-2015, 02:14 PM
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#6 |
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Countdown Survivor
Join Date: Aug 2007
Location: Bean Station, East Tennessee
Posts: 9,676
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Re: how do i find out what size rear is in my truck
If you've got the RPO codes on the SPID sticker inside the glovebox you can tell what came with the truck by decoding that. Should be something that starts with a "G".
__________________
93 Yukon 89 Silverado Z71 SWB Sport 91 K 2500 Silverado "Lobuk-Worktruk" A MAN OF HONOR DOES NOT LIE, CHEAT, OR STEAL, NOR TOLERATE THOSE WHO DO. Gettin' old ain't for sissies. |
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04-04-2015, 04:08 PM
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#7 |
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Registered User
Join Date: Oct 2009
Location: .
Posts: 2,187
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Re: how do i find out what size rear is in my truck
The codes in the glove box will help you in figuring out the ratio. They will not help in figuring out the size of the differential.
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