Yes, it did have a 4.5 in it. I dont know how or why but the 2 aux venturis in the first weber was destroyed, it looks melted at the center bullseye. nothing left but the rest of the carb looks ok. also the slide that goes up and down with the throttle lever, i think it is for the pump jets, that is broke as well while i was trying to free it up last night. the other 2 carbs are ok and cleaned, ready for the service kits.