the factory spec is 55 psi @ 2000 rpm. I run 10w-30. the low pressure is not caused here from the bypass in the pump-so a higher pressure relief valve spring will not increase pressure. I run a hi volume pump with a 7 quart pan cuz I go to 7000 rpm-I do not think a hi volume pump is the answer here. throw on a high flow oil filter. maybe leaking at the cam thrust plate-but check out this plate that was sold by moparperf. probably the issue is loose clearances - main or rod bearings, or the dreaded large chamfer at the tops of the lifter bores and roller lifters
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