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| | | Forums66 Topics128,080 Posts1,055,956 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!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Feb 2006 Posts: 42 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2006 Posts: 42 | Does anyone no where the gearing is marked for my 1 1/2 ton rear end? It says in the manual it is marked on the upper right side of the carrier. But this is not labeled in the drawing. Do I have to take the inspection plate off? I hesitate to do this for fear off not finding a gasket for it. | | | | | Joined: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | Drain the oil, pull the cover off the back. Take a clean rag and wipe down the small round face of the pinion. There should be a number stamped on the end of it, the part number and ring and pinion tooth numbers.
I still havent seen any marks on the housing, but most of the stuff Ive dealt with is at least 50 years old.
Theres also some numbers inside of the teeth of the ring gear, one will have the part number and one will say 6-37 (6.17 ratio) or 7-38 (5.43 ratio), respectively they mean number of pinion teeth by number of ring gear teeth.
As Ive already pulled apart several with the 6.17 ratio, the part numbers are; Pinion 3652549, Ring gear 3652522. Im in the process of rebuilding mine right now and am derusting and cleaning all the parts involved. I imagine the 2 speed rear ends are pretty similar, but I havent taken one apart yet to verify.
Hope this helps, Jeff | | | | | Joined: Feb 2006 Posts: 1,867 Shop Shark | | Shop Shark Joined: Feb 2006 Posts: 1,867 | Oh... The gasket is Fel-Pro #RDS 5049 for the regular 1 1/2 - 2 ton rear. | | | | | Joined: Feb 2006 Posts: 42 Wrench Fetcher | | Wrench Fetcher Joined: Feb 2006 Posts: 42 | Dude you are the best thanks I have Identified the rear end as a 7-38 so this means I have the 5:43 gears which is just what I was hoping! Thanks for the # on the felt dust gasket. Mike | | |
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