"If you take the filter off and rev the engine you know that noise you get from the carb its that noise but more muffled when in the cab"the thin cheap tin air cleaner and very porous paper filter is quite like having no air cleaner at all .... the stock oil bath is a heavy double wall item with the air having to do some fancy turns thru a film of oil, actually designed to be an effective sound dampner
if you search around here you'll find some folks have replaced the guts of the oil bath with a paper filter that seems to work well, and you won't have the noise, which the folks who like to impress themselves with how much gas their hot rod burns seem to prefer
Bill
