Need help with a cam selection for swap

Put the XE274(.511 lift) in our 360 and it does seem to be very clattery. I don't really mind it because, I have the clearance set right and the motor has the 273 style rockers on it. As far as I'm concerned it's suppose to make those sounds but, if I didn't wanna hear'em I'd remove the mufflers and go racing.