Probably sticky lifters, go to the parts store and get a product that frees sticky lifters and change the oil and filter and add the product to the oil and see if it frees them up.
Sticky valves. Go to an automotive parts supplier and ask for an engine oil additive to de-gum the valves.
Most likely it's your valves in need of adjustment.
Ticking in an engine generally refers to the valves. If ticking is apparent on a 1994 Chevy Lumina tighten the valves to factory specifications.
have your valves adjusted adjust your valves
It sounds like the engine timing. The sound is coming from your engine valves. They're not in synch with the rest of your engine. It could also be that the valves are worn out. I'd check the timing first, then the seating on the valves.
you need to adjust the valves
70 is little high for the oil pressure. It sounds like their could be some blockage in the oil holes that run to the top of the engine. The ticking could be coming from the lifters or valves not getting enough oil.
Worn piston rings, Burned valves, Sticky valves,
whenever you can hear the motor ticking or clicking
A ticking or clicking sound is probably lifter noise, the valves need adjusting
probably need to adjust your valves
First, there is no V6, but there is an I6, and the valves are non-adjustable. If you are hearing a ticking sounds, check for an exhaust leak, arcing plug, bomb, etc.