OP is just wasting his time and efforts...........he is a water walker..........stock block was fine with what he was doing before but in his own admission he is addicted to having more power........with that said a real block is the first thing he should be looking for and if he can't justify that then stick with what you got.
I can understand and get on board with that. The concern he is having is, where does the stock block give up and I think that is more in the reliable area rather than splitting it in half for power.
At the moment, I can’t remember who started the thread a way back on block strength. Something like
“Is 600hp the limit on stock blocks” thread.
In reality, 600 is a lot for a stock small block. Actually, it’s a lot period for a small block, race block or not. Not many people go there.
