Lunati Cam

That cam won't pull to 7200 rpm in your 414 like the specifications say so don't expect that. They really shouldn't spec rpm ranges with cams cause engine size (along with induction flow) makes a huge difference in the range it'll work. My guess is it'd work just fine with the air gap cause it'll make peak HP around 6000-6200. On paper it looks to be a really aggressive cam so it should make good power. I haven't ran the 528 cam you have so I can't say how much difference their would be.