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I reposted this because I can not see the 3 replies, weird?
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I am considering a few 12 bolts for my 70 Chevelle. I know I can use any 12 bolt from a 68-72 GM A body. It will more than likely be open as posi is hard to find & a lot more $$.
My questions are these?
1) If I pull diff cover, how can I determine rear ratio? Counting teeth? Turning yoke & counting wheel revolutions? Stock vs aftermarket gears?

2) If I put white lithium grease on ring gear, and turn it what should the mesh look like?

3) Is there any way to check for bent axles other than pulling them? Same question for axle bearing/surfaces?

4) What other kinds of things should kill a deal on a rear?

5) What kind of range does an open 12 bolt go for where you are at?

6) Finally, anyone got a line on a yard in Central/Southern Ohio where I can find 12 bolt rears?

Thanks,
DG


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I've emailed the posting to DG.

Al

Try kicking things around in the test area and see what happens for you DG.
 

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If you can make your way out to Ca. i know some one that is selling a 12 bolt for $600.00 it has 331 gears.

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