What did you do? stop the dyno pull at 3500 rpm? If you built a engine that made 865 ft lbs of torque, and it only made 425 hp, I would say you should stop building engines.:wack:
It had a custom solid roller. But it only RPM'd to about 5800. He got JUST EXACTLY what he wanted. Bore too small, stroke too long, rod too short, a compromised intake port area. All equals a stump puller. But the idiot didn't want that. He wanted to run low 10's.