That is under short term drag race application only, load it like that all the time like in roadracing and no way do they take that much power. On a drag car like that they will definitely have a limit on life after a while there. I did say 350 knowing that was conservative but no way would I say over 500 reliably, the crank is cast and can crack from torsional windup, a forged crank is much stronger. Many much bigger and stronger V-8 cranks can't even make that 750 number. 2.3 crank is also not fully counterweighte d and will break easier for that since all the windup then ends up on the ends of the shaft to break it easier. At those type of power numbers the block will be adding to crank issues too, it will be moving around all over the place.
FYI, HD (I'm assuming high volume what you actually mean) oil pumps commonly sap power, we never used them on race engines except if a specific reason for doing so. They pump more oil but if motor can't use that as most tight ones can't all you do is waste power bypassing extra oil the engine can't use. Around 10 hp on GM SBC engines. The higher volume/pressure WILL load the shaft more there so can make other problems too. We usually ran stock pumps with end clearance tightened up and the pressure spring bumped up a bit to increase pressure.
High volume pumps are generally simply a waste but the conventional wisdom has never figured that out.