Need some help, truck making odd noise
 

After I made a run to KFC I noticed a strange noise coming from somewhere near the engine bottom end or tranny area. At idle it sounds like a bb in a can, but at @1000rpms and up it sounds kinda like a pigion. Yes a bird. Can it be some kind of exhaust leak or is it maybe a spun bearing. The tranny is working normal, no slipping or hard shifts, and the HP seems the same. Help! what could this be? I need all posible inputs please, Im moving to Maine soon and need to get this fixed. The noise increases with rpm also. Thanks in advance.

I have heard of a few leaking where the exhaust manifolds connect to the y pipe.

what were you doing at the time? it could be a something in the motor.
wouldnt know unless you explain more
sorry

I have that noise too. For a while, I thought it was detonation but I was wrong. Its an exhaust leak. Now that I have my headers, its louder... not that it was loud in the first place but you get my point. I really want to get rid of it.

I was spraying on a cobra down HWY 17.My passanger side cut out is missing a bolt, but it doesnt sound like any exhaust leak Ive ever heard. Nothing visual wrong with the motor or tranny.

Its more of a hooting sound rather than raspy exhaust. Does anybody know what a spun bearing sounds like? Its really load if you lay with your head under the truck. Ive worked on engines my whole life and this is new to me. Could the bolts in my torque convertor be loose, or could I have twisted my flywheel?