2.9 tick

[Mutant Pony]

well if you changed the lower bearings and didn't gain oil pressure than the problem is probably cam bearings. There is also oil under pressure doing to the heads (shaft rockers). You could have a head gasket leak. There is also a small possibility of a journal plug may have popped out.
Considering the oil pressure I would say that it is probably cam bearings.
The oil pressure is a problem, The ticking is normal for a cologne engine.