Problem with Holley 4 bbl

dart_68 said

Its a 3310-2 VS 750 CFM. Air bleeds are not adjustable. Only things you can readily adjust are idle fuel mixture via the screws, main fuel mixture via standard jets and PV, secondary main metering via a plate, primary and secondary throttle blade positions, float level, and VS opening rate via a diaphragm spring.

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It sounds like you need to lean out the idle circuit. Only way to do that I know of is to modify your existing metering block, or get one that has replaceable fuel restrictors.

I guess you could do the age old trick of drilling small holes in the primary blades, but that's drastic, IMO. Plenty of folks have done it with good results.