I've been driving with this noise for ~60k miles. The truck runs great, I'd like it to sound great.

The lifters are loud but that's not the issue. It seems to be coming from below the head just a loose rattling noise that goes with the stroking of the engine. Like something is loose just rattling around in there.

I don't have much experience with engine work but I'd guess camshaft bearings is that a common issue? I could use some ideas thanks

 

can we get a video with good sound or a sound clip?

 

I made a video-->
Listen past the loud lifters, there's a rattle/knock. You can hear it best towards the end

 

Sounds like piston slap to me.

 

That could be a loose flex plate.

 

Great video thanks for that

Or loose converter bolts.

I would get on a creeper and roll around underneath listening and feeling to try and pin point the location of the noise.

any engine troubles? codes ect

 

I don't have engine codes.. Hehe

It was the flexplate, 1 bolt rusted in 3 completely loose.

Thanks tbone and thanks for the other ideas everyone. Pretty cool I was already preparing for the worst!