Random tick/tap noise?

[Tommio RS]

Hello everyone.

I come today with a odd noise question.
I have a tick or tap noise from the engine area after driving for while of driving.

Situation:

Cars hot, coolant is over 85C oil is over 70C
I have been driving the car for over 20mins.
Oil level on the dip stick when cold is high.

Car does NOT tick tap or rattle on start up at all.
Car is 1995 ZR-1 no engine mods from what i can tell.
When the noise is heard. This is what i have done to hear it.

At a stop sign or in slow area like 1st gear a ticking/tapping noise will happen for a quick second or two
If i shift gears the noise is gone.
If i free rev to motor half the time it will go away some times return until i shift a gear.


From my knowledge, the speed at which this happens sounds like valve train noises.

My best guess is that the engine oil is the wrong grade like too thin.
When i got the car, the oil was fresh changed buy the seller.
So from my searching, people like to use Amsoil 10W40?

If anyone else has an idea im game.

Tom