500+ horse 440

Thanks. Will that cam produce the low lopping sound like it’s barely running?
On that setup, no. You would need to bump up to a bigger cam.

I think the big thing is what is this engine being built for? Is this for a weekend bracket racer, a streeter, or ??? My recommendation is for a good running street engine that doesn't require a huge cam, lots of stall, steep gears, or anything really more race orientated. Others are recommending setups that achieve the same hp goal, and much better on the lopey sound requirement than my recommendation, but they are different in their approach and end use, IMO.