360 crank strengths

Please correct me anywhere in this thinking: stock 360 cast crank,AAWJ(?);next up the later in strength would be the 4-bbl. 4-speed CFD cast crank; aftermarket cast crank would be equal to(?) factory forged 5140 crank and 4340 is top of the line...not including billet crank. IF these assumptions are correct, and given proper tuning and no detonation,proper clearances,sun shinning and no water in the oil pan,what are each of these cranks able to handle HP-wise? To make things even,say 6500 is the maximum rpm the engine will see. Looking forward to discussion/answers.Thanks! Bob