Well, I didn't get the screams of outrage I expected from my one-word answer, so here goes- - - - -Extra carburetion just multiplies the potential problems encountered by a single source of fuel and air. I've worked around single, dual, triple carbs, and even one carb per cylinder on some applications, and the more possibilities there are for problems, the more you'll encounter. A single, larger-volume carb or a progressive-linkage 2-barrel might be a wiser choice, IF the engine can live with more venturi area without developing flat spots, sags, stumbles, and backfires due to leaning out at various throttle openings and manifold vacuum conditions.
A carburetor works by creating a low-pressure area in the venturi, so increasing the available space for air to flow by adding a second path slows down the velocity of air flowing through both carbs. Unless you make both carbs much lower-flow units, you just set the stage for NO fuel delivery, just lots of air, at certain times, due to lack of venturi velocity. Not a good idea, in my opinion.
Jerry
