When good is not enough, Camshaft time again.

The difference in power between 10 runs on a dyno could be HUGE when you’re actually tuning it. Maybe there’s no reason for you to be disappointed just yet. For instance, the twin turbo BBC I built for my boat on the first pull made 545hp. After 20 pulls (running timing sweeps and lash loops, as well as carb adjustments and boost) we were knocking on 900 hp. That’s a different animal because of boost but I could definitely see a difference of 80-100hp in tuning a healthy NA fuel injected big block between first and last runs.