Surprise! Now what...

Have the block baked and get that stuff off. Then have it liquid magnafluxed to see everything that the naked eye can't see. If cracked or machined through I would have it spray welded. I would only do that for a numbers matching restoration. Spray weld powder is very expensive.

Glue has no place on an engine unless it is plastic and 1/25 scale.

You can make perfume out of **** but in the end it will still smell like what you started with. Find another block with a low number such as 340-1 to 340-3 for your build. Stroker engines put more stress on the cylinder walls lower numbers seem to sonic test better than higher numbers . Just a thought!