Putting a new cam in my 360

"So now I'm looking into other cams. The comp 262XE sounds good. The 268XE sounds better. I'm a little worried about the extra lift (477 vs 462 valve and lobe lift of 318 vs 308) with the zero-deck and flat tops. Am I correct in worrying about that?"

max lift occurs when the piston is way down in the bore...valve to piston clearance is critical during overlap...the exhaust valve is closing and the intake is opening...long duration with alot of overlap will cause problems with valve to piston clearance....the two cams you have listed above because of their relative small duration will not have any clearance problems.....