[edwhite7]

Excaliber is correct. The carb setup is dependent on the manifold type, single plane or dual plane. In the Tunnel Wedge design which is a single plane, each cylinder has acess to both carbs. In the dual plane design which is the most common dual quad manifold the carbs are split and each cylinder only has access to half of each carb. Because of this design a dual plane usually can run a bigger carb that a single plane.