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Click on image for the lowdown. 
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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: Oct 2021 Posts: 6,833 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,833 | Texas, do you have a shop manual for your truck?
Those are the pressures listed in the manual for a properly functioning engine so as long as my engine (and yours) operates withing those ranges, I don't worry about it.
People used to modern vehicles with 30-80 psi get nervous with such low pressures but it's perfectly normal for these engines.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
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