Quote:
Originally Posted by Dwight Southerland
While that was true once upon a time, that allowance was rescinded a long time ago IIRC. Quote from the engine section of the rulebook for SS: "Any aftermarket steel valve permitted; must maintain stock head and stem size; titanium valves prohibited."
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Dwight,
It is still in the 2018 Rule Book.
Super Stock, Section 12A, page 2
Cylinder Heads
Any aftermarket steel valve permitted; must maintain stock head and stem size; titanium valves prohibited.
(OEM sodium-filled valve may be replaced with titanium, provided weight is equal to or greater than original.)