1996 Z28 350 makes a chirping noise from engine sound like its from rocker arms or lifter area?

Probably a sticking lifter; put in a can of RISLONE every time you change oil for the next few times; that should do it if it is just a minor problem. A chirping noise can also be a defective drive belt. I haven't heard of a chirping noise before, but I've heard of lifter tapping. If it's just some light lifter tapping, add some Lucas oil stabilizer next oil change. This is really good stuff that adds extra lubricants and protectants to the oil for better engine performance and durability. Adding this to your oil should take out any light lifter noise or tapping. I run this in my 94 Z along with full synthetic Mobil 1. They make the Lucas oil stabilizer in synthetic as well. Hope this helps you out.