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Old 05-26-2007, 03:51 PM   #2
jamis
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Re: stock vortec valve springs?

The lifer type is not critical, it’s the total lift (at the valve) and RPM that can cause valve float or coil bind.

The L31 vortec max lift rating is .420 it has 75 pounds of seat pressure @ 1.7 installed height. Check your cam spec for what is needed.
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