Holley Idle Screws Not Responsive

You can get away with no vacuum advance if the int/total & curve is dialed in, & the carb is set up right in the curcuits, not too rich, not too lean.

684mulas, i would set up that carb for 4 corner idle, this will give you alot more adjustability, with that cam, 18 & 36 should be very close.