[ted]

The 3310 and 3310-1 780 cfm carbs are good carbs providing they are mechanically sound to begin with and not worn out. The later model 3310's (3310-2 and up) have a different fuel discharge nozzle design and also work well but the 780 version has just worked better on my 427's. I actually tried three different carbs on my 427 HiRiser and they were all within 3 hundreths of each other in quarter mile racing. The carbs were the 3310 780, an 850 DP, and a 1050 Dominator which required an adapter. Changing the intake to one that had the Dominator carb flange welded in place of the original ran et's in the same time range as the three aforementioned carbs on a standard Holley flanged intake.

Just food for thought.