The 4 stroke cycle is 720 degrees- - - -not 360. Intake- - - -180. Compression- - - -180. Power- - - -180. Exhaust - - - -180. Add them up, you get 720 degrees. On a 6 cylinder engine, there's a 120 degree separation between intake strokes. With a firing order of 1-5-3-6-2-4 and three intake ports, only one cylinder is drawing air through the carburetor on any intake stroke. The carb only needs to be calibrated to supply an air/fuel mixture equal to 1/6 of the engine displacement. On a 235 that's 39 cubic inches, and since it's impossible to get 100% volumetric efficiency on anything but a highly modified racing engine, the practical limit is around 90% or a little less. That's around 35 cubic inches on a 235- - - -and that's at wide open throttle and around 3K RPM.
The laws of physics aren't "suggestions". The most common mistake virtually all hotrodders make is "too much cam" and "too much carburetor"!
Jerry
