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LS9 exhaust valves

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  • LS9 exhaust valves

    Wondering if LPE recommends using LS9 exhaust valves in LS3 heads?

  • #2
    The LS9 cylinder heads use a different valve seat from the LS3, and is intended to be used with the LS9 titanium valves. The valve tip will be different as well and may cause some installed height issues depending on which retainers you are using. We do not put LS9 valves into LS3 heads and would suggest buying LS9 heads if you want the lighter weight valves.

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