71 Dart 410 stroker ..

So where did the valve stem separate at???? I would be real "gun shy" about all the rest of the valves....now!
.040" over block is work it........a new sleeve can't be as expensive as remachining another block.

I just when back and look at your pics again........so the valve stem didn't brake? just the head broke into pieces? I don't think i have ever seen that. A piece torched but not shattered like that.
So you think you will be able to save the head?
Looks like the ring landing is crushed on the piston.