View Full Version : Sb chevy valve spacing
perfconn
01-23-2012, 09:56 PM
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
01-24-2012, 12:56 AM
Are you speaking of the 14* raised runner or the 23* raised runner?
perfconn
01-24-2012, 12:31 PM
Whole statement and question was concerning 23*
let-r-eat
01-24-2012, 02:06 PM
The 23degree RR head is 60/40 valve spacing.
JJ128
01-25-2012, 08:13 AM
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?
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