Its been my experience that on a "race" type 416 motor, its pretty near impossible to " overcarb" them. Even on an 11.8 to 1 eddie headed 416 i used to have, the 1050 pro systems dominator i installed on it made better et and mph than a pro systems 750, 1000 and a race demon 1025 rs did( the 1025 rs was mighty close though)

I then took that 1050 dominator and later put it on my 422 w5 motor.

In short, i cant imagine in a race car scenario, not using a dominator over any 4150 type carb out there, its going to make the car faster, imo. I have tried enough different carbs on them to say this quite confidently.