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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: Mar 2005 Posts: 121 Wrench Fetcher | | Wrench Fetcher Joined: Mar 2005 Posts: 121 | Had the same problem years ago on a rebuilt that had sat for a while before being fired up. Pulling the pump is a big job, I would pull the distributer and "pre-oil" the engine first to see if the valve doesn't loosen up on its own first- it worked for me after only one filter.
Find an old distributer and pull the shaft out, take off the cam gear and then get a big heavy duty drill and put the shaft in it. Stick the shaft into the distributer hole and engage the oil pump then power up the drill. Do this a few times & hopefully it might free up the valve.
Dave
66 GMC- father /son project with the "GMC KID"
36 Chevy PU- 4x4 lifetime project
64 Skylark- wife says its hers
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