Carburetor cfm calculator

273 said
The question shouldn't what cfm you need since basically all carbs will only flow the cfm you need, carb ratings are basically meaningless,

Following this advice and thought train will get you into trouble every time.

but what vacuum level am I shooting for,

This as well. Even more so if you don’t fully understand what your getting into.

With a race only the question is what's the fastest, street strip whats the fastest with acceptable driveability, with daily driver street what's the largest I can go without sacrificing driveability. Sure you could slap on a small 2 bbl or 4 bbl and drivability will be fine but your giving up hp for nothing

Considering the OP’s statement of driver with occasionally horsing around with his buddies. This is the least of his problem but helps create one for him. Your boxing him in between two of his statements.

whole point swapping from a 2 bbl to 4 bbl in the first place on a V8 at any power level I've never heard any one complain the a 600-650 cfm being too big. A 750 cfm is a mixed bag but I feel most the are unsatisfied probable was more from poor tuning then over carbution.

So what is it your really saying to him here. This becomes a contradiction for him.