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Mod | | | Forums66 Topics128,077 Posts1,056,033 Members48,433 | | 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!
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#14418 02/09/2004 8:14 PM | Joined: Jan 2001 Posts: 5,337 'Bolter | | 'Bolter Joined: Jan 2001 Posts: 5,337 | That hole was drilled from the factory for an oil passage from the head bolt to the rocker oil connector. They needed to drill it starting from the outside, it was then pluged on the outside with an 1/18" pipe plug.
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