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What is your oil pressure with your LS6 Oil Pump?

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Old 09-13-2005, 01:32 PM
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Ive got a ported one _ a touch over 40-45 at idle and 60 while cruising at WOT its all the way over on the dash
Old 09-13-2005, 01:43 PM
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I remember someone saying something about the pump needing to be shimmed or something I didnt do that I just tightened up the pupm is that where I screwed up at cause my oil pressure gauge doesnt peg out at WOT?
Old 09-13-2005, 01:47 PM
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Originally Posted by 1slow01Z71
I remember someone saying something about the pump needing to be shimmed or something I didnt do that I just tightened up the pupm is that where I screwed up at cause my oil pressure gauge doesnt peg out at WOT?
I think that you only need to shim it if you're using a double roller timing chain, for clearance.
Old 09-13-2005, 08:48 PM
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Originally Posted by 1slow01Z71
I remember someone saying something about the pump needing to be shimmed or something I didnt do that I just tightened up the pupm is that where I screwed up at cause my oil pressure gauge doesnt peg out at WOT?
Not the kind of shimming Im talking about. Im referring to shimming the pressure relief valve of the pump. Thats how you get a high pressure pump.
Old 09-13-2005, 08:54 PM
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Originally Posted by 99Silver5.3
Not the kind of shimming Im talking about. Im referring to shimming the pressure relief valve of the pump. Thats how you get a high pressure pump.
How do you do that? I dont know what the pressure relief valve is. I may be pulling the motor shortly to rebuild it since its burning oil now. Hopefully its just a messed up valve guide seal.
Old 09-13-2005, 09:10 PM
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My ported LS6 pump makes about the same pressure as the stock one. I don't think that there is fundamentally really any difference between them. However, shimming that relief valve would probably work to increase peak pressure.
Old 09-13-2005, 09:25 PM
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Originally Posted by 1slow01Z71
How do you do that? I dont know what the pressure relief valve is. I may be pulling the motor shortly to rebuild it since its burning oil now. Hopefully its just a messed up valve guide seal.
You dont have to shim it. Thats just how a high pressure pump is created. Pic below. You can see the relief spring and where it is located in the pump. The small plug towards the end is removed and shims inserted.
Old 09-13-2005, 09:56 PM
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Why Do You'll Want So Much Iol Pressure 30 To 40 All The Time Is Good To Much Is Not Good Either It Will Wash Out The Bearings Faster. That Is Not Good Either.so In The Middle Is Good. I Go Off Of Idle It Should Be Around 30 To 35, As Ling As It Goes Up And Not Down When I Give It Gas It Is Good.
Old 09-13-2005, 10:12 PM
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Originally Posted by litreddevil
Why Do You'll Want So Much Iol Pressure 30 To 40 All The Time Is Good To Much Is Not Good Either It Will Wash Out The Bearings Faster. That Is Not Good Either.so In The Middle Is Good. I Go Off Of Idle It Should Be Around 30 To 35, As Ling As It Goes Up And Not Down When I Give It Gas It Is Good.
I do not want that much pressure. I just got a plain old pump. Just showing how it was achieved and what I meant by shimming.
Old 09-14-2005, 06:14 AM
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Thanks silver Im going to check it out if I have to pull the engine. Im going to do a compression test tonight or this weekend and see if a ring is toast.


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