C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Oil pump

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Old Dec 16, 2006 | 09:55 PM
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From: Brandon Fl
Default Oil pump

I have to drop my oil pan to install a return line for my supercharger and figured while I was there I would put a new oil pump in there. So my question is what is the best way to go here? Should I just go back with a stock pump or step it up a notch? I have heard that high volume pumps can be a bad thing with a stock pan and oil system as they don't allow the oil to stay in the pan and can starve your bottom end of oil. Is this true?
Thanks.
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Old Dec 16, 2006 | 11:28 PM
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Originally Posted by Steve87VETTE
I have to drop my oil pan to install a return line for my supercharger and figured while I was there I would put a new oil pump in there. So my question is what is the best way to go here? Should I just go back with a stock pump or step it up a notch? I have heard that high volume pumps can be a bad thing with a stock pan and oil system as they don't allow the oil to stay in the pan and can starve your bottom end of oil. Is this true?
Thanks.
I would stay with a stock pump, and install a GM Performance high pressure spring. As a rule a thumb, for every 1000 RPM of operating range of your engine you need 10 psi of pressure. The GMPP spring will yeild about 70 PSI of oil pressure.
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