need help tracking down a noise.
The noise i am hearing is a rattling noise that is coming from up front of the engine only at higher RPMs (5-5800) oil pressure is great, everything is tight. I dont know where the hell this noise is coming from and its starting to scare me to think its internal. I have heard that timing chain is a possiblity if so i geuss its time for a H/C setup. speaking of which, any recommendations on a great setup on a DD? thanks everybody i really need some help.

