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Labor Day Putting down your wrenches or time for
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| | | | Joined: Sep 2010 Posts: 27 New Guy | | New Guy Joined: Sep 2010 Posts: 27 | I am trying to find a cross shaft pin for my 55T diffferential in my 57, 3100. I have a GM#,3931175 that might be it, but can't find much info on this number. Anyone have any info to get a different pin?
Last edited by yousa; 06/16/2012 5:34 PM.
| | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | someone might know, but .... what's a "55T diff"?
Bill | | | | | Joined: Sep 2010 Posts: 27 New Guy | | New Guy Joined: Sep 2010 Posts: 27 | someone might know, but .... what's a "55T diff"?
Bill GM55T differential in my 57,3100 | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | I am also not sure what 55T is. Is that a stock diff.?
If so it fits 1937-62 1/2 ton.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Some parts sources list the HO33 differential as a "55T", meaning "55 Truck". The same sources also tend to list a "55P" for the '55-'64 Passenger differential.
As far as finding a cross shaft, you might try Toms Differentials. I beleive they do have them, and theirs is made to eliminate the block in the diff assembly. I'm pretty sure it is designed to work with the stock axles, as well as their 30 spline conversion.
Bill Burmeister
| | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | I have a used one I could send you.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
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