I second the MOPAR 528 cam . Changed out a comp XE268 in my 451 earlier this year and very happy. Starts and idles nicer , and way out rips the Comp cam in low and top charge. That Comp cam would always stink at idle and yes just as noisy as the 528 solid .
3rd. Ran it in a 440 in a '71 'cuda. Very good natured and tons of torque!
You can run the 528 and tighten the lash some to quiet the motor if it bugs you. It will make the cam a touch wilder, if you go real tight, like .012 hot. Don't forget, that the lash loosens up as the heads warm up. My 440-1 heads gain .006 lash, RPMs may be a bit less.
