IML: oil pressure

["Robin Giesbrecht" <robings@xxxxxxxxxxx>]

Wondering if anyone has ideas on why the oil pressure on my 1972 440 
Imperial would fluctuate from 10 psi at idle to 40 psi at highway speeds 
with a surge in pressure of 10 psi when throttle is lifted. Engine is 
rebuilt with all new crank bearings and cam bearings and oil pump. Using 
after market oil pressure gauge. I put a supposedly hi pressure oil  
pressure relief spring in also(black) but am wondering about it's quality. 
Engine runs great and no rattles or strange noises.

Robin Giesbrecht
1972 Imperial

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