Years ago there was an amazing CarCraft article where the author put a car on the chassis dyno and tested I think 4 carbs from a 650-950? Not sure about that but.... The smallest carb made the least HP/TQ and the largest made the most, just like you would expect. Then he took the car to the strip and raced them while monitoring intake vacuum. Guess which carb went quickest? Yep the smallest one. Yes the MPH fell a little but it was very little IMO. Also the smallest carb created the most intake vacuum by a vast margin. I remember the take away and at the time I was dumbfounded. Those types of articles were few and far between that mirror what I've seen IRL. J.Rob