I have a 446 non stroked 440 and I originally tried a Hi Po Carter manual pump. I installed a fuel pressure gauge on the cowl and saw the pump wasn't doing the job. I was down to 1 or 2 lb fuel pressure long before a quarter mile drag strip burst was completed. I have used a Mallory Comp Pump 140 with no issues and it has proven to be much quieter than either the Holley Blue pump or an electric Carter of the same flow rating.