Big Block Hp Capability

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I just read what the small blocks can take for power and abuse. Now lets hear about what guys are running there big blocks to. I've always heard about 700 hp for RB and 800 for B motors. So lets hear some stories and see pictures of high powered BB's. Good and Bad welcome.
from what ive researched over last couple years due to building a 68 440 a factory forged crank and block are good to about 800 hp and thats pressing it