I have two qft 750 carbs on my tunnel ram. Quick Fuel told me they had it setup for 6 jet size difference between power valve front and rear. Well with sideways mounted carbs the fronts feed passenger bank. These seemed to run fat while the driver bank run cleaner. My wideband o2 sensor is on drivers side. Well I decided to measure the PV jet which was like .054”. Turns out the area diff is worth 9.2 jets. Holley says the 750 PV is 9 jets, WTH man. Yikes, trust but verify.
