What is the CFM of a tripower?
If you read this carefully, you will be surprized. And, you may learn a few things. I did as I did research to find the “real” answer to this question. First, you must understand that flow numbers are estimates based on a mythical engine. Picture a 400 cubic inch engine running at full throttle. It is essentially sucking air through the venturi of the carb (or carbs). If this engine had a 2 barrel carb, the suction through each venturi would be greater than the suction through each venturi of a 4 barrel. The increased suction would actually increase the flow through each venturi. True, the 4 barrel would produce more CFM flow, but each barrel of the four barrel would produce less CFM than each barrel of the 2 barrel. Right? Because of this, flow numbers based on venturi diameter have to be adjusted between the four barrel and the two barrel. The error many make is merely to apply a multiple to the four barrel numbers to yield flow numbers for the 2 barrel, then add the numbers up for t
