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| | | Forums66 Topics128,032 Posts1,055,517 Members48,425 | | 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
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | Some people have mentioned a check ball in that drain back hole. Does anyone know if that check ball is present in a '36? If it is there crankcase vacuum would tend to pull it open keeping the air leak constant. It seems to me that vacuum would indeed tend to keep the ball unseated while the engine was running.
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