Pontiac Firebird Camshaft Lifter Noise

Can Too Much Oil (2 Quarts) Destroy The Lifters In My Son's Car. Plugs Have Been Changed, But It Still Makes A Clicking Noise.

I Have The 305 Tbi Engine In My Trans Am. The Car Sat For 5 Years Before I Aquired It. I Have Run Seafoam Engine Additive And Changed The...