Auto Racing: air flow in typical and racing engines, maximum airflow, cubic feet per minute

Question
This is not really a repair question. Do you know the flow rate of air flowing through the carburetor of typical and racing engines? I'm looking for the rate of flow at idle up through high revolutions (ie. liters/sec or what ever units they are measured in.  what I am not looking for is gas-air mixture ratios.  I have a design for a carburetor but I need to know a range of flow rates before I can start on a prototype.  At this point a general range is sufficient if that's all you know.  Also do you know any engineering types that I could contact about my design?
Tx Jim

Answer
Jim-

  To be perfectly honest I don't know how much air you'd see at idle.  Carbs are generally measured by their maximum airflow potential represented in cubic feet per minute (cfm).  Most street applications fall into the range of 500-600cfm for a small block V8.  Obviously the size of the carb will vary with engine size, so you'll need to fine tune it quite a bit.  In racing applications size can vary wildly depending on class rules, type of racing (drag racing, stock car, sprint, autocross, etc.)  You might see a 600cfm carb in a stock type class all the way up to two 1,000+cfm Dominators on a huge drag motor.  Essentially what you need to figure out is the volumetric efficiency of the engine and try to work the carb to fit that equation.  Hope this helps.

Steve