Well, the cam has a RPM range, that is where driveabilty really starts. Seeing that you have a 4.10 gear, you can kind of get an idea how long the car will take to get to that RPM where the cam kicks in. You'll feel it (The cam) come in, turn on sort off.
Looking at the combo, I myself would opt for a smaller cam by 10*'s.
OR
Make a jump in gear ratio to get out of the hole at a reasonable rate. The cam is large enuff that the 4.10's are actually holding you back.
Also, the Edelbrock heads, in a OOTB condition are very good for a street strip 360 in it's port size and advertised flow rate. The cam controls the RPM in which the engine and therefore, the car operate in.
The head and cam can be slightly unbalanced and still give a good performance, however, in this case, theres a bit much cam for the set up at hand.
Along with the gear ratio is converter, carb, compresion and cars weight.
The MP .509 cam is good for a A body to be propelled into the 12's easy, low 12's with a good set up. I have met 3 or 4 guys running hi 11's in a lighten race Duster. And I mean a race car only. No wipers, heat/defrost, 1 seat, roll cage etc..... you know the drill.