I have a loud knocking noise coming from my lt1. I was having some fun with a C4 in the mountains with an avererage rpm of about 4500-5000. at the end of it i noticed a small ticking i still had 200 miles to drive to get home. by the end of it the ticking got a lot louder. my oil presure wont go above 32-35 lbs. it idles fine. i think that it might be a spun rod bearing. anyone have any experiance with something of this nature. or any ways of diagnosing the problem before i rip the bottom end apart?

 

I'd bed you spun a bearing. I got 5 on it.

 

+5 ont the rod bearing my 99 ls1 did the same thing!