INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

Do I need to shim the oil pump spring?

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Old 06-05-2008, 08:33 PM
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Default Do I need to shim the oil pump spring?

Just ported the new oil pump and wondering if shimming the relief spring is necessary and if so how thick of a shim do I need? I''m thinking something about the same depth of the allen head retainer that the spring would normally sit in.......
Old 06-07-2008, 02:16 PM
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Well for anyone interested, in the LS1 book they show an aluminum spacer from SLP that looks like it just fits in the recess of the allen plug. So I went with a couple of #10 (I think) stainless washers that left just enough space for the spring to sit in the allen plug. This should give slightly higher oil pressure. I'll let you know when I fire up the new 370..........
Old 06-07-2008, 02:48 PM
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Personally I wouldn't want the higher oil pressure.
Old 06-07-2008, 03:27 PM
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Originally Posted by truckmann
Personally I wouldn't want the higher oil pressure.
It's only at WOT
Old 06-15-2008, 09:29 PM
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not needed unless you, well, NEED IT for some reason.

the stock setup will push upwards of 65psi+

the "old" rule was always 10psi for every 1K RPM (thus 65psi = 6500RPM)
LS1 manuals rate it at 7psi for every 1K RPM due to tighter clearance
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