Powell Machine had some storm damage but let's talk cams anyway.

Like a lot of others, Powell claims that the intake closing is one of the two most important cam events. Sorry, could never see the logic.
An engine needs to ingest air to make hp; ingest more air, more hp. At IVC, there is zero air ingested. I would think what happens before the IVC is more important when air is still flowing into the cyl &.....