Horsepower limit for out of the box Edelbrock RPM heads

Do these heads that flow 300+ work worth a crap in the lower rpm ranges, say in a street or road course car? For my use cases, a nice flat torque curve from 2500 rpm on up is more desirable than a few more HP all on the top end. Obviously cam selection plays here but does a 370 cfm Victor or Indy 360-1 have good port velocity for responsiveness?
If you’re asking if it will work with 3.23 gears, lugging the engine around town, I’d say no, but if you’re talking about sustained highway cruising with an OD, it’ll work fine. Just downshift before trying to pass! Running a small block at low rpm seems counterintuitive to me. Isn’t that what the big blocks are for? In a road course car, wouldn’t you gear it accordingly?