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Click on image for the lowdown. 
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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: Feb 2019 Posts: 4,511 AD Addict & Tinkerer | | AD Addict & Tinkerer Joined: Feb 2019 Posts: 4,511 | The plug your seeing is for filling. You drain it by loosening and prying open the bottom of the cover. Once drained, remover the cover, clean out the gunk on the bottom. Inspect or replace the gasket , then reinstall the cover.
Fill to the bottom of the fill hole. I use 90 weight multi-purpose gear lubricant. If you have a posi rear I believe you will also need some type of additive.
Phil Moderator, The Engine Shop, Interiors and Project Journals1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc BrakesProject JournalsStovebolt Gallery Forum | | |
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