Power wise, no, not great carbs, they have a small CFM rating (most max out around 500cfm) which is why 2 were often used to give stouter 50's V8's enough go juice. That being said when built properly they can be very smooth and dependable on an old cruiser. The cast iron bases make them quite heavy as well, I'd say for a single 4 barrel they are the heaviest of ANY 4 barrel, combine 2 of them with a cast iron intake and it's anchors away!