69 Chevelle rear 10 bolt Fit a 1972 GTO - Pontiac GTO Forum
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post #1 of 5 (permalink) Old 06-28-2018, 09:58 PM Thread Starter
 
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69 Chevelle rear 10 bolt Fit a 1972 GTO

69 Chevelle rear 10 bolt Fit a 1972 GTO. What problems will I have? Thinking of switching my rear pinion u joint to the Chevelle, will this work? I think the Chevelle pinion nut is smaller then the GTO , also will my rear u joint work on the Chevelle rear?

TJ
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post #2 of 5 (permalink) Old 06-28-2018, 10:07 PM
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You posted in the 2004-2006 GTO section of the forum, I moved your post to the correct forum page.
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post #3 of 5 (permalink) Old 06-28-2018, 10:41 PM
 
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The Chevy 8.2 is even weaker than the BOP 8.2, according to most. I think the Chevy 8.2 will use the smaller 1310 series U-joint. I assume the Pontiac will use the larger joint, which I think is sometimes referred to as a GM 3R, an S44, or a 1344 series.

To mate the small joint rear with the large joint driveshaft, you'll need a conversion joint. I think the Neapco # is 3-3130, the Precision/Moog number is 372, and the GMB number is 240-0356.

https://www.ebay.com/p/Universal-Joi....c100005.m1851

https://www.amazon.com/Precision-Dri.../dp/B000CJOGWC

https://www.amazon.com/Moog-372-Univ...70_&dpSrc=srch

https://www.ebay.com/p/Universal-Joi...-0356/76883596

But, I could be wrong. pinion head is the rear end expert here.
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post #4 of 5 (permalink) Old 06-29-2018, 04:52 PM
 
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tjvending, if you are in a pinch to keep the vehicle running and the 8.2 Chebby rear is a known good rear, and its dirt cheap, that's the only instance I'd go to swapping one in a Pontiac A-body. The lack of pinion support and c-clip axles is why I've always shied away from the Chebby 8.2's in anything A-body wise that was putting any kind of power to the ground Have probably gone through more 8.2 Chebby rears for cruiser type early Chebby II's and 30's streetrods than anything else.
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post #5 of 5 (permalink) Old 06-29-2018, 07:33 PM
 
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Garage
It will fit, you will need a conversion u-joint. I did that to mine back in the 80's when I had a bad carrier in my 68. Left it in there for quite a while, till I found the parts to repair my original one.
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  Pontiac GTO Forum > The 1964-1974 Pontiac Tempest, Lemans & GTO > 1964-1974 Tempest, Lemans & GTO Undercarriage, Frame, Transmission and Differential Discussions.

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