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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: Jun 2000 Posts: 2,773 'Bolter | | 'Bolter Joined: Jun 2000 Posts: 2,773 | If it has good flow to the valvetrain, it should be good. The other test will come when the engine is running. The pressure will then depend on several factors.
For oil, most of the manufacturers have removed most of the zinc, which is needed for proper camshaft lubrication. According to Shell, their Rotella diesel oil currently has enough zinc, and they do not have plans to change. So I am now recommending the use of Rotella 15W-40 in most flat-tappet cam engines.
Fred
52 3600
69 C-10
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