[Fot] Intake Manifold Crossover

[Larry Young]

There is another factor here, and I'm not sure of it's effect.  The 
intake valves on #3 and #4 (and #1 and #2) have a lot of shared opening, 
e.g 120 degrees of shared opening with a 300 degree duration cam. If you 
shut off the crossover, then much of the time you'd have two cylinders 
pulling on one carb.  I've always wondered about the other extreme, i.e. 
mount both carbs on a big plenum.  Has anyone tried that?
Larry Young