I notice your only under load for 3 seconds, surely if you loaded the dyno more it would be more realistic to track conditions and probably show more bhp.
You think the motor will last beyond 3 seconds pushing 633hp?
Maybe these questions are rhetorical, but I will humor them. The 633 pull wasn't the first or second time it made that. Do you think he just guessed a psi then just happen to have a camera running when he made that pull.... It's been hit more then once and more then 3 seconds, the video just shows that it was accomplished, its not an endurance video. For the record I've never seen a 10min dyno run. Good day gentleman.