Chuck I am sorry I did not get back to your PM as I am feeling much better today. As was stated you need the lifter on the cam base to adjust and I just do mine by cranking the eng and watching the valves to know where they are. Adjust them cold when you assemble it and the after it runs a bit pull the covers and adjust them again hot without the eng running. I love the .557 cam my self as it works great in my 63 and my boys Dart. You can PM me anytime as I will try to help all I can. Good luck. Ron

Oh and I only adjust my valves once a year. And I drive my 63 alot in the summer.