Are 280 cams too big for my Evo3 16g?

[DSMsOwnYourV8]

So I'm wanting to upgrade to a HX40 from my Evo3 16g turbo, but before I do that, I want to get a headgasket and some head studs because I'm planning on running 30psi with the HX40. I know I'm going to need some cams for that HX40, which I mise well do while I do the gasket/studs, and I really want to run some 280's. My question is: Are the 280's too big for my E3 16g that I have now? I've heard that they are, but I want to do it right the first time, and be done with it.

 

[boostin3030]

Great thread.... I had no idea one set of 272s could be so different from another set of 272s.