On the Holley HP and Proform carb bodies there are adjustable air bleeds for both idle and high. They were also very helpful in dialing in my ProForm body 3310.. Holley Carb - Building the Ultimate 750 Holley 3310 How to build the ultimate 750 Holley 3310. airhorn inlet surfaces, down-leg boosters and screw-in high speed and idle air bleeds.
Holley 3310 decided it doesn't like idling any more - Corvette Forum
Holley tuning: air bleeds - Ford Muscle Forums : Ford Muscle Cars.
holley air bleeds - RiverRacer.Net
Main Jet Extension Main Jet Extension 126-XX-10 Replaceable Air Bleed Air bleeds for the idle, intermediate and high speed circuits.
Holley 3310 decided it doesn't like idling any more C1 & C2 Corvettes. some junk stuck in one of the transition circuit slots or one of the idle air bleeds. Idle air bleeds really shouldn't be changed untill you've done everything else you. Holley 3310 Idle Bleeds
Holley Performance Jets and Air Bleeds Products
3310 idle air bleeds SMI Carburetor Street Performance Holley 4BBL 3310 - 4160 (750CFM.
