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Click on image for the lowdown. 
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| | | Forums66 Topics128,092 Posts1,056,451 Members48,443 | | 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
with Ads!  Again, thanks!
| | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | If you look inside of each rocker you will see a groove that will carry the oil around the shaft and out the vent hole. If you put the shaft holes on top you will see oil squirting out the vent holes and flood the top leading to oil consumption.
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