high oil pressure
12-09-2010, 10:08 PM
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high oil pressure hello, car is a 99 z28 i use valvoline 5w30 full syn. i put in a new sending unit not to long ago, before the new oil pump i was running about 40-45 psi on idle normal temp. i put in a new cam along with a lingenfelter HV oil pump and i ported it and used the stock oil psi relieve spring but i shimmed it a little. the lowest the oil pressure would go on a hot day normal temps on idle is 55 psi. when i accelerate and go up to 2500 or 3000 rpms my gauge is getting very close to 80 psi. now is this normal or is there something i need to worry about. car has 96k miles.
12-10-2010, 04:18 AM
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A higher volume wouldn't mean a higher pressure. It's because you shimmed the stock spring. I have a melling high volume pump and put the stock spring in it, same oil pressure I had before. I'd say if it doesn't go over 80 it should be fine. I'm sure someone with more knowledge will fill you in.
