[goodhart]

Never heard of this happening before. That's not to say it couldn't happen though, especially if it got that hot. Just look around for any other things that may still be attached. Get anything near the head that may attach to the block out of the way. Sounds like you may have to pull the motor anyways though, since you stripped a head bolt.

If you really did strip a head bolt I would say the block is junk, but if it's still a 7 bolt I know guys are boring the head bolt holes out in them to hold 6 bolt studs, so it may still be usable if thats the case. Good luck.