Help with idle rpm and carb on 340

Set your initial to around 14deg to start with. Then find what rpm your engine likes to idle at,and set your curb idle screw there. Probobly around 800-900 rpm if all else is ok (in neutral,not in gear). With your Holley have your idle mixture screws at around 1.5 turns out to start with,then slowly turn in both screws until you see the rpm start to drop. Slowly then start turning the idle mixture screws back out until you achive the highest rpm with the mixture screws only.You will probably end up between 1.25 and 2 turns. Then back down your curb idle screw to the rpm you determined the best idle at. There is more accurate ways of doing it,but this will get you very close if done properly. Hope this helps!