Dirty_D95

I have a 95 3.4 camaro and the other day I went for a drive about 100 miles round trip. About 5 miles from home the car started making a slight ticking sound and my oil pressure dropped from 40psi to about 20psi. I was about 300 miles from needing an oil change but changed the oil anyway to see if that would help but it didn't. A friend said it could be anything from an exhaust leak at the manifold all the way to needing a rebuild any ideas would be greatly appreciated.
Thanks

Dirty_D95

Got the Problem solved the other day it was the coil pack arching that was making the car run like crap and making the ticking sound