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Re: Help with ID on rear end
The signs of all the brackets being cut off makes me pretty sure that it is a 65 or later B Body (Impala size) 12 bolt.
There isn't a lot of info on B body 12 bolts but if you scroll down this page to the 12 bolt section there is info that you can use https://www.chevydiy.com/history-and...differentials/ Scroll to the bottom of the page past the 10 bolt section.
I had a 66 Caprice/Impala 12 bolt Posi under my 48 when it was subframed and I wish I had kept that rear axle.
The GK stamping on the tube isn't jiving so far though.
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Founding member of the too many projects, too little time and money club.
My ongoing truck projects:
48 Chev 3100 that will run a 292 Six.
71 GMC 2500 that is getting a Cad 500 transplant.
77 C 30 dualie, 454, 4 speed with a 10 foot flatbed and hoist. It does the heavy work and hauls the projects around.
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