new cam-valve /lifter tap. Help!

Not really. I had a Lunati 0601 256/262,213/220 at 0.050, 454/475 112 LSA and replaced it with an xe 268 268/280, 224/230, 477/480 @110 installed at 108 and a coan 2500 converter. The noise is on the left side so I am going to pop the valve cover this afternoon after work. What should I be checking for? Seems comp has been known to have loud lifters once in a while according to other car forums>