melted piston

[qwkdsm2]

i have a block with a blown or melted piston...you can call it whatever
it just has a big hole on the top and when i pulled it out it was shattered
around the sides........my question is the cylinder has little specs around it that look like dents in it......can i still use this block....its been bored .30 over already.......what do i need to do to it to use it again...
the other three pistons are fine......and i have a new piston .30 over and ring ready for installation but...im really worried it might not seal....please help...i don't want to have any blow by

 

[Defiant]

If it can be re-used, that cylinder will need a sleeve. Which probably puts you over the cost of another block.