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Generation III Internal Engine
1997-2006 LS1 | LS6
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Old 10-12-2008, 11:12 AM   #1
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Default is my oil pressure too high?

i just finished my heads / cam install, also replaced the oil pump with a mellings 296. the car turned right on , but i was looking at the oil pressure and it reads at 60 at idle. i dont know if this is ok. i used the blue spring, and the black o ring that came with the pump. If this is ok then what is too high at idle , and while driving? What do you think?
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Old 10-12-2008, 04:48 PM   #2
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60 isnt bad. I see 75psi cold oil pressure at idle pegged at 100psi above 1500rpm cold. When its hot it idles at about 50psi and pegs at 100psi WOT so i think you are fine. The black o-ring is correct. The green one if for the truck pick up style if i remember correctly.
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Old 10-18-2008, 09:10 PM   #3
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Quote:
Originally Posted by wilwhite2kss View Post
i just finished my heads / cam install, also replaced the oil pump with a mellings 296. the car turned right on , but i was looking at the oil pressure and it reads at 60 at idle. i dont know if this is ok. i used the blue spring, and the black o ring that came with the pump. If this is ok then what is too high at idle , and while driving? What do you think?
Your okay. I wish melling would supply that pump with an even "lighter" relief spring imo.
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Old 10-18-2008, 09:21 PM   #4
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the only prob with that much oil pressure, is it bypasses oil by the oil filter when its that high when its cold. besure to you a very good oil filter, because they have a spring instead of a crush sleave like the cheap ones.
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Old 10-18-2008, 10:25 PM   #5
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what gauge are you going by???im pretty sure the gauges in anything newer than the 98 are just dummy gauges...meaning its either reading low or high...if so get an aftermarket gauge and put in the car....
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Old 10-19-2008, 05:05 PM   #6
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thats the way it is in mine
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Old 10-19-2008, 06:25 PM   #7
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yeah i think mine is sitting around 60 too.. i know its more than half..not sure what half psi is on the gauges, but its more than that.
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Old 10-19-2008, 06:29 PM   #8
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what gauge are you going by???im pretty sure the gauges in anything newer than the 98 are just dummy gauges...meaning its either reading low or high...if so get an aftermarket gauge and put in the car....
only the water temp gauge is a dummy gauge after 98
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Old 10-19-2008, 06:42 PM   #9
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At WOT mine will peg the guage. I've never had a problem.
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Old 10-19-2008, 06:42 PM
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