what size carb for a 416 stroker

Square the primaries and idle off the secondaries with a 4 corner carb or drill 3/32 holes in the throttle blades as pictured. No matter what you need to have the primaries square or less. It won't run rich then of idle. Sounds like your into the transfer ports at idle. My car idles at 1500 off the secondaries. Primaries are closed. 3 size larger air bleeds in the primary side. The more air it sucks the less fuel it sucks. Put your fingers over the air bleeds and watch how rich it gets then.

I have seen cars so rich they could knock a buzzard off a **** wagon at 100 feet with one stab of the throttle.

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