440 what am I missing here?

Yeah, the bottom end is still going to be a little bit soft in comparison to some cams with an earlier closing event. But it's still going to work good enough with a power range of 2000-6200 rpm. And a converter upgrade will more than take care of it. But with this tire, not going to be a problem. Not that this is a bad tire, just that it's out of it's idea environment here.
https://www.tirerack.com/tires/tire...tireModel=Raptor+ZR+A/S&partnum=345WR7RZRASXL