Has anyone checked out or tested difference in engine performance and
> mileage when changing from stock to open design air cleaners? I have a 64
> Galaxie with 390, and seems to me that the big 4 BBL breathing through that
> snorkle just won't work well. Then I figure that engineers should know what
> they are doing, but that was way back when. Anyway, would like to do a bit
> of research before trying a new unit that may only increase growl from
> secondaries (which is a good thing :)
A measurable difference on a dyno perhaps.