Titanium Valves in SS

[SSDiv6]

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While that was true once upon a time, that allowance was rescinded a long time ago IIRC.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."

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.)