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| | | Forums66 Topics128,078 Posts1,055,936 Members48,430 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Apr 2005 Posts: 15 Apprentice | | Apprentice Joined: Apr 2005 Posts: 15 | I have a GM rear that came with a parts truck and I don't have a clue as to what it is. It is under Chevy 1939 1/2 ton pickup. It has a front drop out with a solid back housing. It has 10 bolts that hold in the drop out also. It has the following numbers cast on the pumpkin. E207 3725889 or 3725899 GM
I am sure somebody knows and would greatly appreciate any info. It has 5 bolt wheel on it also if that helps.
Thanks again Ed | | | | | Joined: Oct 2003 Posts: 5,152 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Oct 2003 Posts: 5,152 | Probably a '55 to '57 Chevy, maybe '58 to '64. Possibly an Olds or Pontiac or Buick as they look similar. The numbers might clear that up, but I don't have a reference readily available.
I once put a '57 Pontiac rear under a '41 Chevy pickup. My memory is that it was a very easy swap, but it was about 35 years ago... An acquaintance of mine has a '57 Chevy rear under his '41 Chevy pickup. That was an easy swap, done about the same time I did mine.
1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble... | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | Round or oval in shape? If it's an oval shape, then it would be the '55-'64 OldSub mentions. If it's round, then that would be Olds or Pontiac. If it is a Chevy, parts are relatively easy to get. I find 3rd members for them all the time, many with Posi. Also, 'Vette diffs up to '62 will swap in as well, opening up even more options for gearing/posi untis.
Bill Burmeister
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