Well lets see here, the 224 cam will make better power across the entire band while the 221 will make good power across the band but more so in the higher RPMS. Your going to get more peak torque faster out of the 221 but you will get more total torque out of the 224. It also depends on the LSA, you only posted the lobe centerline. Post that up and it will help determine the powerbands of the 2 cams a little better.