Camshaft to Small???

Too small for what?

... For a 400 bored .60 over, Aluminum heads with 2.14/1.81 valves, duel plane intake, whose intention is to be a daily street motor with attitude in a 3000lb(ish) car. As well as it should have good vacuum for the brakes and AOD trans kit I have.

I guess I'm really trying to find peoples opinion on this setup, and if there is a better option for it's intended purpose while the motor is all torn apart. Once it goes into the car, it will not come out till either; it breaks, or I'm ready to stroke it. I was hoping there were some old Mopar gurus out there with expert knowledge/experience on cam choice, because I am not one of them. :(