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| | | Forums66 Topics128,109 Posts1,056,269 Members48,439 | | 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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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Jan 2011 Posts: 16 New Guy | | New Guy Joined: Jan 2011 Posts: 16 | New to the group and restoring a new toy. I'm changing out all the fluids and going thru what I have. I don;t know the gear ratio but the stamped # on the ring gear shows 3692201. Is this a 55 rear end? I am asking because the new cover gasket is oval and mine is round...10 bolt. It seems that some of the pics I have seen here of rear ends don't match what mine looks like. There are no casting #s on the outside of the rear end. Any input is appreciated.
Robert Greer
55 1st
| | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Up through 1962 1/2 tons are round.
See the USA in your vintage Chevrolet! My Blog | | | | | Joined: Dec 2006 Posts: 1,464 Shop Shark | | Shop Shark Joined: Dec 2006 Posts: 1,464 | Welcome to the 'bolt! As long as you have the cover off count the number of teeth on the ring gear and divide that number by the number of teeth on the pinion gear, and voila, you have the ratio. | | | | | Joined: Apr 2006 Posts: 506 Shop Shark | | Shop Shark Joined: Apr 2006 Posts: 506 |
-Tom
1950 Chevy 3100 w/ 1956 235
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