A little help on cams

Another member posted some info about the Thumper cams designed for just that.
You might find it with search ( good luck ) . If I remeber correctly, that grind delays opening the exhaust valve. Naturally it would have to open and close the valve faster.
You trade away some performance and fuel milage for the thump.
A radical cam that produces a lumpy and rough idle will not be as street friendly for around town driving and also reduce vacuum which effects power brakes. All of this stems from what I've read and not my personal experience.