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Discussion Starter · #1 ·
this is my first car(57)ever so please bare with me.
I have the original non posi rear end. I found a 63 Belair posi rear at the salvage yard .
Should I use the 63 rear end or should I take the guts from the 63 and put it in the 57 rear end.
If I use the 63 what should I replace in terms of gasket / seals
Is there anything in particular I should look out for or a must do?
 

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Swapping the posi differential carrier from the 63 into the 57 rear end housing will be the way to go....See Shop Manual:http://chevy.oldcarmanualproject.com/shop/1955/55csm0408.html

You might luck out.....However, I personally would have a competent mechanic go through the posi carrier, before it is installed.
 
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