When Holley calibrates it's street oriented carburetors from the factory, they do it with the intention of the carb functioning properly on a high vacuum engine
When you toss a choppy cam.into the mix you end up with a carb that won't idle correctly, won't take mixture adjustments and wants to die when you put it in gear.
There's a simple adjustment and sequence you can use to restore the balance of airflow and fuel mixture for a clean idle, the trick is to know where this adjuster can be found and what do do with it when you find it.
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