Holley Carb Id

Do you guys know how far up the secondary transfer slot is on that carb? :BangHead:

before installing the carb measure (with a drill or feeler gage) how many turns of the idle screw it takes to 'show' .020" of transfer slot. Count how many turns it takes to 'show' .030" and 0.040". Write those numbers down. That's the acceptable range for setting the idle throttle opening at slow idle. Outside that range will cause delayed response or flat spot as the throttle is opened while driving.