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Generation III Internal Engine 1997-2006 LS1 | LS6
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Valve spring pressure?

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Old 02-17-2004, 10:15 AM
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Default Valve spring pressure?
What is typical spring seat pressure for aftermarket springs such as Comp 918s?
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Old 02-17-2004, 10:42 AM
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Typical performance single spring is ~130 @ 1.8" and 320~340 open depending on the lift of the cam.
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Old 02-17-2004, 02:25 PM
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My 918s were measuered at 129#'s at 1.8". IIRC stockers were something like 72#s!
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