After lots of measuring and scheming I've decided to duct fresh engine air from the very generously sized (and hopefully high pressure) windshield cowl, rather than using a scoop or NACA vent in the hood. To that end I've been measuring and cutting poster board all day mocking up two identical air boxes for each of the DCO 50 Webers ... and scoping out how to plumb air from the cowl to the air boxes given the tight space constraints under the hood. BTW, I'm unable to use one box due to space, fuel line and linkage constraints. The engine is spinning at 8,100 RPM's and the cars is running 150-152 in the three mile.
To further complicate things, the back throat stack on the rear carburetor is crowded by the master cylinder and brake booster, limiting the depth for both air boxes to 3.25". The boxes dimensions are 6 high" X 5.25 wide" X 3.25 deep". Overall the boxes seem adequate at 112 cubic inches each (it's a 122 cubic inch engine), but I'm concerned about the 1.6" distance between tops of the 2" diameter stacks and the air box wall opposite them. Of course the firing order is such that only one carburetor throat in each box will draw at a time. The space limitation also includes the plumbing from the cowl to those boxes. That will require feeding air into them from the back side of each through a .75" X 5" rectangular slot (3.75 square inches), with that air being delivered by a shared 30" long 2" X 6.5" rectangular shaped duct.
With all that as background, does anybody see any (or several) flashing red lights to this plan?
Rick
P.S. Sorry I can't add pictures to make this a bit less confusing!