Mopar 7* locks

[flyinlow]

I remember reading about the Stelth heads locks. Do all 7 degree locks have problems? Case in point Mopar 452 aluminum heads. I have not had any problem with the Eddy RPM heads. (same lock)

[metallicareload99]

I don't think it's really the angle that's the problem, more so the quality. I never took the Stealths I had apart, but I have seen some cheesy stamped? valve locks. Not saying thats what are on the Stealths, but there must be some reason upgrading them is a universal suggestion.

I've always wondered when it's needed to go from 7⁰ locks to 10 degree?