Time for a new Carb

I'd go with a 650 (or 800) AVS (not AFB) from Ededlbrock or a QuickFuel 600-750. A lot of people will say a 750 is just right and it maybe. Holly/Quickfuel or Edelbrock, pick which ever your used to tuning.

I wouldn't buy a carb from Classic Industries. Their customer service sucks.