The Holley #4412 (500 cfm) carbs (at a 2 bbl test pressure 3.0") flow about 350 cfm
each when rated like a 4 BBL carb. So about the same cfm as a 1050 dominator with the cool factor.
The #4782 is similar to the #4412 carb and the #4783 carbs have 850 cfm (#4781) type venturis and throttles and will flow more than any #4412 carb. 1-3/8" venturi for the #4412 carb and 1-11/16" (over .125" bigger venturis) on the #4783 carbs each.
I have about 10 sets of the #4783 carbs Mike. Used but in very good shape.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
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