[John Lang]

Being a former Hemi Racer,(still have it) I have been taught that with alot of valve spring pressure you should make sure that you run a RADIAL single groove valve lock, as the square cut grooves tend to act like a guiolotine and clip the valve off, but leaving the valve locks in the retainer with the valve stem intact ! Excuse the spelling as i don't know how to spell Gilotine very well ! I learned about the Radial groove valve locks after # 8 Intake valve decieded drop through the top of the Piston ! Shazam,......That's what I was told !..........John