holley 850 transfer slot ?

Secondary transfer slot idle setting holley transfer slot adjustment If I remember right you don't want more than 060 of the transfer slot showing, I usually set the secondary throttle blades open to that point slot deposit bank if your idle mixture screws have little to no effect then likely too much of the transfer slot is exposed my holley rebuild manual states that

slingo xxxtreme slot I bet your idle adjust screws are about 12 a turn out 1 take the carb off and square up your idle transfer slot 3 Turn the idle mixture