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Old 01-12-2004, 01:30 AM   #1
whitesswj
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Question Rear end ID!?

How do you tell what kind of Rear end you have on your pickup? I've got a 68 c10 w/ the orginal rear in it. What is it?
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Old 01-12-2004, 01:32 AM   #2
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99% sure it is a corporate 12 bolt...should be easy to ID by the 12 bolts holding the diff cover on. If it doesn't have 12 bolts, then it is something else...and we can probably tell you what that is, also.
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Old 01-12-2004, 01:36 AM   #3
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Corporate 12 bolt?? what does that mean??
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Old 01-12-2004, 01:51 AM   #4
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Quote:
Originally posted by whitesswj
Corporate 12 bolt?? what does that mean??
It means that you have a 12 bolt rear end that was manuf. by GM
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Old 01-12-2004, 01:58 AM   #5
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Is it a posi rear?
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Old 01-12-2004, 02:01 AM   #6
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That would be an option installed inside your rear....could go either way, but probably not.
Go out and do a burn out. If you leave one mark, then you either have no posi, or a burned out posi.
If you have 2 black marks in the street from one burn out, then you are in luck.
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Old 01-12-2004, 02:01 AM   #7
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You will have to pull the rear cover off to find that out. Some were posi-trac and some were an open diff. Is your glove box tag intact?
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Old 01-12-2004, 02:04 AM   #8
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that was painted over by the last fool who owned it and ran Penzoil (CRAP!!) in it. I did a, well i tried to do a burn the other day and I left 2, or so i think, I'll try again.

You know, a 6 cyl w/ a 3 on the tree can only do so much! Amen?
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Old 01-12-2004, 02:06 AM   #9
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"Go out and do a burn out"
250 plus 3 speed=

gotta learn how to type faster
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Old 01-12-2004, 02:08 AM   #10
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kwmech what does it equal??? come on??
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Old 01-12-2004, 02:14 AM   #11
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I was being sarcastic
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Old 01-12-2004, 02:14 AM   #12
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just rev it up a little higher. Onless you have a real sick engine or a slipping clutch you should be able to lay a good 10 foot patch.
Onless you have some 275/60's out back anyways.
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Old 01-12-2004, 02:18 AM   #13
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nope, just 235/75/15
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