360 camshaft for 8.4:1 engine

forphorty, Comp cams XE268H numbers looks good. .477/.480 w/ adv. 268/280. 1600/5600 rpm. This cam may work well with the new rhoads lifters I already have.
Question would be if this cam is a little much for the 8.41 static comp. the motor currently has. If its too much....how much smaller?
How much would this cam kill the bottom end?
Also, cam card notation states that adj. valve train is needed.
If my factory stamped rockers will not work with this cam, then it's a deal breaker for me, as much as I do like the lift/duration numbers.

BB66, Thanks for the lead on the Summit K6901.(.441/.441 adv. dur. 276/286) This cam is sort of close to the cam we currently have, .410/.440. (dura. currently unknown) Cam card rpm range stated 200-4500. Would this cam make the motor fall on its butt @ 4500?

Thanks for the support.