The plenum on the 724 intake is huge compared to the Victor 383 intake. Who knows, if a guy wants to run a 4150 carb maybe the 724 with a 4500 to 4150 adapter is the way to go???

I could probably try that on the dyno. It might be interesting to see what happens. I'd have to get me a 4500 to 4150 adapter since usually the adapters are the other way.

I think the Victor 383 is an okay intake but for a 500 inch motor I'd rather run a 4500 carb. Assuming other people think the same way, the 724 intake should be more popular than it is.