[markjohnson]

Just a little FYI, you could probably remove that stud girdle with those being tough cast iron heads. Aluminum heads (especially GM snowflake) are where those things are really needed. They can be a pain in you-know-what! Loosen the girdle, lash the valve to the correct setting, tighten the girdle up, and then re-check the lash and see that it changed. Very frustating!