Edelbrock Pro Flo 4 EFI

My friend has a dyno, so we decided to spend a few hours to find out whats happening. And seems that I need a bigger cam, engine can take only 30.25 initial timing. And I think thats because of my 8.3 dynamic compression. But, it pulls strong to 6000 and Hp is rising all the way, torque curve is flat from 3200 to 5200.