Spectre04

Just another person chiming in. No audible ticking at idle outside of normal valve sounds. When cruising around 45-50 MPH and above, what sounds like an exhaust leak is heard from driver's footwell. Seems louder in 4cyl operation than 8cyl. Seems to be either more quiet or plain non-existent when ambient temp is cold. I noticed it when on a road trip with three people in the cab, and the truck had 750 miles on it. I haven't tested it with a trailer yet, but now have 2300 miles on the truck and it persists. No unusual transmission behavior, just the usual hesitation when reactivating the other 4cyl and dropping gears during acceleration (seems like a 185 operating temp is norm). Oil pressure ranges between 38-42 regardless of situation. Nothing like the loud clacking at idle as seen on youtube videos. I swear I heard it get louder when driving in inside lane next to barriers, but traffic was heavy and can't confirm. I'm going to haul a little trailer around with some extra folks in the car to prove it's load-dependent. Either way, truck runs fine. I know it's not a helpful post...sorry.