port matching the intake manifold?

dusterdon said

I'd gasket match the intake. When you go from a small, higher velocity port to a larger one you will lose a lot of velocity. you don't need to go more than 3/4" inch in. The sharp edge you have now will cause turbulence. A die grinder or even a dremel could work. A cutter will load up pretty easy. Try a sanding wheel.

don

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This is 100% correct, if your velocity slows to much the fuel droplets will fall from suspension from the air. The velocity needs to stay as constant as it can.
Anyone remember the old Edelbrock SP2P intakes? This was the exact thing. The intake port was small for velocity but it dumped into a large port which had the fuel problem that I described. Because of this problem Edelbrock discontinued production of these intakes.