High Oil Pressure >.<

If it's a street car or even a mild race car you need neither a high pressure nor a high volume oil pump. Oil pressure as high as you describe will pump the pan dry in no time and start spinning crank bearings because the oil doesn't have a chance to drain back into the pan. I'm actually surprised you haven't blown an oil fiter off the side of the engine. I've seen it happen. I wouldn't even run pressure that high with an 8 quart oil pan. All an engine needs is 10 PSI per thousand RPM. 10 PSI at 1000, 20 PSI at 2000, 30 PSI at 3000 and so on. That's IT. In fact, if the oil pressure gauge is even off the peg at ALL at idle, guess what? That's enough. Most stock oil pressure sending units cut the oil light on at 3 PSI. The parasitic drag is the absolute LAST thing you need to worry about. If you have a stock oil pan on it, I sure wouldn't even run that engine at all until you replace that pump with a stock pressure/volume unit. Opinions vary, but that's mine.