I would like to see the source for the CFM rating for a Rochester B.
There is a CFM chart in Doug Roe's book which does include the Monojet, but there are no Rochester B references in the chart.
As far as the feel of more power, I would sooner believe this is true because of "Soooo... I took them both apart, got my box of B parts and put all the best parts in the 54 carb." than the different carburetor.
Even seemingly "better" parts that are improperly matched will generally run worse than standard parts.
Jon
