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Oil pressure will be around 30-40 psi when at full operating temp.


That depends on what RPM you are asking about. Most every Pontiac I've ever had...in decent shape anyway, ran around 60 PSI at anything over 1500 RPM and would idle in the 30-40 range. Pontiacs were factory equipped with high pressure oil pumps and should run a higher oil pressure than a "comparable" Chevy.

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