Anyone running a two-barrel on a hot 318 or 273?

I ran the stock carter 2 barrel and intake on a 273 with commando pistons, and a 284 duration solid cam. Was pretty quick but you could hear a whistle from all the air trying to go through that 2 barrel. Went to a Offenhouser intake and factory 273 AFB and that worked great. Swapped the AFB for a 600 Holley and that went OK. Got tired of always messing with the Holley and went back to the AFB. No quarter mile times, mileage was always around 20 mpg, Holley was around 18mpg.