For balancing the carbs here are a few quick and dirty methods I use when I don't have a flow meter or WB A/F meter: Setting Idle 0 Assume good plugs, valve adjustment, no vacuum leaks, good fuel pressure and float levels set correctly. 1. Remove air box 2. Warm up car and remove all linkage connections so that the carb's throttle plates are resting on their set screws. 3. Adjust each set screw so that the suction felt when you put your knuckles against the throat of each carb and feel the air