Oddball stroker question

shop i use to work on big trucks at owners friend had a boat that we did a hot rod 350 chevy motor for,...cast crank,pink rods dubble hump heads,big roller cam...first time out bottom end cleaned house,..wont nuttun left to rebuild,...so went back with a big block poncho motor stock but high performance,..it lasted 2 trips to lake for bottom end went down,..ended up with forged crank an rods for it would live,..water harder on a motor than you think spicaly the bottom end...good luck