[V8] Noise that is driving me absolutely CRAZY!!

[Ingo Rautenberg]

Kyle,

Sorry to hear about your aggravating little problem. I hate extraneous
noises, too! Unfortunately, without us coming by to see you, it's pretty
much impossible to help.  However, if you could record the noise and upload
it to your webpage for us to listen to, we might be able to help.
Otherwise, as Kent pointed out, I would use one of those mechanics
stethoscopes to help pinpoint the noise.  By "sounds like a diesel" do you
mean all the lifters are ticking very loudly?  If so, I'd experiment with
different weight or type of motor oil.  What are you running now?
Obviously, as you say, this only manifests itself when the engine has warmed
up.

Ingo