Yeah you'll be happier in the long run with a smaller cam on the street and then a regular "high performance" converter. For your engine I'd recommend something like the old Mopar Performance 528 solid. That cam works great in a 470 high performance street engine. It is big enough to make good top end power, but it will also drive really nice with a typical high stall street converter. It isn't a race cam so don't buy a race converter, just stick with high performance street parts. Call Porter Racing Heads and tell them what you're trying to do and they'll get you the correct camshaft for your application.