calculating CFM for an engine

this is the formula to figure out how big of a carb you need and how
much air flow you really need...

                              CFM = (rpm x displacement)/3456


       ( 4,000 rpm * 360 cubic inches ) / 3456 =  416.67 CFM

at peak torque on an AMC 360 you only need:
       ( 1,700 rpm * 360 cubic inches ) / 3456 =  177 CFM


  So the 290 CFM carb that comes stock on the '80's vintage Wagoneers is ok...