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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: May 2014 Posts: 92 Shop Shark | | Shop Shark Joined: May 2014 Posts: 92 | We've established previously that I have a 1960 235 block. I was looking at the passenger side oil,passage that runs vertically from directly above the distributor hole up to eventually oil the rocker assembly. My question is: What is the purpose of the tapped and plugged hole in this passage? http://www.1954advance-design.com/Web%20images/1958-60-rocker-oil/1958-rocker-arm-lubrication.htmlFigure 18 shows it. Thanks | | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | you mean figure 15? I would assume that plug comes out for cleaning or it was for initial drilling of that passage then blocked off to force the oil to the front through the other passage shown. | | | | | Joined: May 2014 Posts: 92 Shop Shark | | Shop Shark Joined: May 2014 Posts: 92 | Yes, I meant 15. I guess they had to have access to drill the horizontal portion of the hole. | | | | | Joined: Sep 2010 Posts: 2,315 'Bolter | | 'Bolter Joined: Sep 2010 Posts: 2,315 | When I got a short block from a aclands years ago there was a tube that went under the side cover on the passenger side that provided oil for the head and rockers .the guy at the time told me the older 235,s never had a oil gallery. New ones have . After installing my engine no oil up under valve cover had to go back and install tube. | | | | | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | 1957 and older need the tube.
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