I'll tell you an example, my first pull on my 471 was 601 hp, with dyno tuning it's putting out 682 today. That's incremental small changes with air bleeds, pv's, main jets, transfer slot restrictors, timing changes, distributor curve work, header change, and every time one thing was changed almost everything else needed to be changed.
I'm not bragging at all, just pointing out what Dyno tuning can accomplish.
