[Shotimes] Rod Knock or Tensioner Slap?

[Leigh Smith]

Does anyone know how to tell these two noises apart?

I just realized my new 94 SHO makes more engine noise than my 250k '89 did.
It has about 100k on it, and there is a light tapping noise about 2400 
rpm with light throttle.
Seems to be in second gear only. Can only hear it with the radio off. 
Doesn't do it when cold. Only when warm.
Sounds a little like a rod knock, but very light, not like any rod knock 
I ever heard.

I guess the big question is, do I need to stop driving it until I can 
pull the oil pan?

Lee