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Are LS1 valves same size as SBC?

Generation III Internal Engine 1997-2006 LS1 | LS6

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Are LS1 valves same size as SBC?

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Old

Nov 18, 2002 | 08:46 PM

#1

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Are LS1 valves same size as SBC?

Not the head sizes, but are the stem and length the same size? If not, what are they?

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Nov 19, 2002 | 05:43 AM

#2

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Re: Are LS1 valves same size as SBC?

No LS1 valves are .313" stems and 4.900" length(avg.) the stem is referred to as 8mm. SBC is .342" 0r 11/32's.

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