It was not making this noise to my knowledge prior to the throw out bearing being replaced. Long story short, I bout the truck from a guy, it needed a head job (leaky valves). Pulled the motor to go through the top and bottom to ensure everything looked okay. Turns out the bottom end had been rebuilt by a previous owner. Everything looked brand new. Got the heads worked, put a new clutch and throwout bearing on while I had the engine pulled. I checked the trans fluid last week, topped everything off, it isn't leaking anywhere (to my knowledge)
I did not replace the pilot bushing. Maybe this was a mistake?
And this noise didn't start immediately after everything was put back together. I put the motor back in late January. This noise suddenly popped up a couple weeks ago. This truck isn't an every day driver, just a weekend here and there kinda deal. Noise only happens while in gear, and clutch pedal not pushed in. The noise is not constant either, very intermittent.