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#1
10-10-2006, 10:07 PM
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61 pontiac rear end
I have a 3.23 posi center out of a 61 Pontiac and I was wondering if that pumpkin would fit in a 55 Pontiac rear end housing.
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#2
10-10-2006, 10:18 PM
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No. The same center section will fit 57-64, and yours will directly fit 59-64 because of the 13 spline axles.
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#3
10-10-2006, 10:19 PM
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I can't type.......31 spline axles.
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#4
10-11-2006, 08:51 AM
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49-56 rear ends are totally differant than 57-64, it won't work. The best option would be to get a 57 housing , which is a bolt in (same width as the 55 too) and get 31 spline axles made(57-58 are narrower but 29 spline) or 60 olds axles. Brad Durst at Fabcraft was going to set me up with some shortened 31 spline axles out of the 59-64 cars at the time I was going to do this also , but went a differant route.
Last edited by Bill Eveland; 10-11-2006 at 11:14 AM. |
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#5
10-11-2006, 10:50 AM
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Bill are the 63 housings the same width as the 61's?
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#6
10-11-2006, 11:16 AM
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I can't say for sure, but I would think they would be the same.
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#7
10-11-2006, 08:56 PM
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Quote:
Dave B.
__________________
Have the Most Fun at Pheasant Run - 2012 
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#8
10-12-2006, 09:32 AM
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I thought the 61-62 housings were 1-2" narrower than the 63-64's.
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#9
10-12-2006, 02:51 PM
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We rough measured 7/8", which would mean the axles would 7/16" shorter
Again, Brad would know the exact dimensions - Dave B.
__________________
Have the Most Fun at Pheasant Run - 2012
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#10
10-24-2006, 06:26 PM
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Bill. what route did you end up going ?
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#11
10-24-2006, 07:13 PM
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9", I picked up a complete 3:50/traction lock for $100, just needs to be narrowed. Plus I have an excellant F*rd 3:90 factory gearset that was taken out of an old Cougar during a restoration.
I looked at it this way , any 57-64(59-64 posi) pig is at least 400-500 bucks, plus a housing and axles and whatever gear you want , another $500. Since my car is leafspring , I didn't have to worry about control arm mounts etc. I really hated to think about using this part in my car at first, but my budget really isn't there just so I could run a Pontiac rear end and I got this other rear end so cheap..I figured any hardcore Nascar fan doesn't worry about their GM guys running the same rear end under their car. |
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#12
10-26-2006, 05:54 PM
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I am planning on keeping my original '57 rear and using a detroit locker and 31 spline axles from Fabcraft. I am just waiting for Fabcraft to finish the lockers.
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