Cam match to intake

Guys I recently acquired an A body Duster with 440. Previous owner just gave me the cam #'s. The engine ha a very recent rebuild, with compression ratio around 9:1. There is an Edelbrock, Performer manifold and #1411, 750cfm carburetor. Cam numbers he gave me are 284/.484 lift. It is running stock, cast iron exhaust manifolds. I am estimating this set up to be about 375 hp. The exhaust, (Dura Max) is not suggesting a very lobe sound at idle. Is this the optimum cam for this set up. It is a street driver, not a strip car, but I also don't want a pussy street car if you know what I mean. The engine was built down from the early Trouper, Highway Patrol issue engines. It ran higher compression and a 1500cfm carb putting out about 390 hp. and drinking as much 93 octane as the state could buy. Thanks for any suggestions, including Intake manifold as well as cam.