Garys1969RR
Well-Known Member
Yes thanks on that. I was a little confused on the differences. Mine is an early 3310-1, has the secondary metering block as opposed to the plate. And the vac secondary carb is not a double pumper. The Holley mechanical sec carbs are double pumper.I hate to call ya out on this, and I mean no offense, but this info is incorrect, (according to the info I have) ONLY the orig 3310 and 3310-1 are a 780cfm 4150 (double pumper), as you said, lack of a metering block on the seconds indicates it as a 4160 vac seconds, therefore IF its a 3310 it'd be -2 to 6 making it 750cfm.