No2 question how much will hold

Thats such a loaded question. The block is iffy around 500 rwhp or so but I have seen quite a few hold 200 shots in person and online. Even seen a stock block 331 launch off of idle on a 200 shot a few times before blowing a head gasket. 75 shot if done right and not on a worn out engine will be fine.
 
foxbody88stang said:
Depends if its forged or hypertetic.Forged will take the abuse alot better.Im running a 306 with 175 dry shot 90,000 miles on motor. Never had problems from the spray. 75 shot no problem!

The hyperutectic wont deal with detonation but they will hold a 75 shot if all else is fine. Barry D on TurboMustangs.com made 620 rwhp on a stock hyperutectic short block, the block split and the pistons were fine. If you touch detonation though, the hyperutectics will die with the quickness!