The god’s honest truth is
I don’t Dyno anything I honestly believe if you know how to build a motor that a Dynomometer only tells you what you already should know. so these motors should make around 500 hp realistically they’re all roller cam motors the blower motor. I would suspect it would be about 750. And for what it’s worth a jet drive is a water dino so the numbers that the motor makes at various stages tells what the real horsepower is are very close to it.