Originally Posted by Gorn

Are you getting any dripping coolant? A compression test is unlikely to find anything since your coolant is clean. If you did the test per instructions you pretty much eliminated the head gasket as the cause. . If you are burning coolant it almost has to be intake related. My next step would be to pressure test the coolant system. You can borrow the tool from any chain auto parts store with a loan a tool program and check out some "How to Pressure test my coolant system" videos on youtube.

One thing to keep in mind , you should constantly be checking the oil before during and after tests to look for any coolant, It will cause the oil to milkshake. If it starts do not mess around. Drain the coolant and change your oil. If you want to keep working on it put water in it. or just take to a real mechanic. The coolant reacts to the high pressure of the oil pump and chemical breaks down. One of the by products is an acid that will melt your bearings. These engines where only produced for 3 years and just for the camaro. To find one in decent shape is very difficult. IMO oil in the coolant is the number one killer of these motors.