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Old 12-18-2013, 09:49 PM   #4
66-PMD-GMC
The 60-66 GMC/Pontiac guy....
 
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Join Date: Oct 2010
Location: Apache Junction, Arizona
Posts: 1,306
Re: 12 Bolt Differential Mystery

Quote:
Originally Posted by LVPhotos View Post
The 1962 perches will weld outside the 1970. I know mine are that way. Just get new ones and weld on. The 60-62 x frames are wider than the 1963-1966 hince bed bolt issues and such.
Yes, I am aware of the differences, thanks..
I need a 5 lug and wanted to swap in the 5 lug axles but they are too long for the "70" diff..
Now I am looking for a housing for the parts out of the unknown year leaker diff or I may just need to find a 5th complete differential.
(I left out the 86 10 bolt that is noisy)
At this point I don't believe the "70" diff is a 70, I think it is a 64-69 possibly...
I'm freaking confused now...


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Building Genuine Pontiac Firepowered cars and trucks for several decades.

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63 C10 Short Wheel Base fleetside (The Pro-Street) currently under reconstruction.
440CID 2X4 Pontiac
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