Sb chevy valve spacing

[perfconn]

COMMON 23* VALVE SPACING IS GENERALLY REFERRED TO AS 20/30 SOME HEADS SUCH AS THE 11X HEADS ARE 60/40,MY QUESTION IS:what is the valve spacing on the RHS Raised runner steel head?

[let-r-eat]

Are you speaking of the 14* raised runner or the 23* raised runner?

[perfconn]

Whole statement and question was concerning 23*

[let-r-eat]

The 23degree RR head is 60/40 valve spacing.

[JJ128]

I found the same info, the RHS raised runner steel head is a 60/40. Also, if it is the same head you are talking about, I read that it is angle milled and actually has a 21° valve angle?