Quote:
Originally Posted by Formulajones
Yes absolutely start with the idle circuits. I don't know what Quick Fuel uses for idle feed restrictors but 1 1/2 turns out is quite a bit on a 4 corner idle circuit, especially on such a mild combo.
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X2 on the idle circuit with that mild engine. Put a vacuum gage on it and idling, slowly turn the 4 screws in 1/8 turn at a time and give it a chance to stabilize. I am guessing you will see maximum vacuum at about 3/4 turn out from seated with the 4 screws. Even so, 4 corner Holley carbs tend to idle rich, which keeps them happy with larger cams. You may want to try a different spark plug, just slightly hotter if your doing allot of low RPM, in town driving and idling. I would think a R45S would be plenty hot but R46S should be available. Adjust the idle mixture first.