Interesting noise coming from dash or elsewhere

[K85 Octane]

I know, I know....a noise question. Like you're supposed to diagnose a noise you can't hear from hundreds if not thousands of miles away.

I can only describe the noise and it's location. I also filmed it.
Here goes:

*Comes from either engine compartment or just under pedal/floor board area.
*Makes noise erratically; when driving, at a stop, cruising, crawling, etc. It could be quiet one second and active the next.
*I have no dash, no speedometer. I do have a brand new Lokar cable that's well lubed, but considering it makes noise when stopped... it's not the cable. I don't have to be moving, though when it's dead cold, I never hear anything.
*Sounds like a crackle, like the sound fire makes. A low crackle pop, like hardcore Rice Krispies. If you have a wooden desk, tap the under side like crazy with your fingernails. It's a little more metallic clattering, but that is the closest sound I can think of.

Video: (no, nothing is going to pop out at you. Turn up the volume if necessary)
http://s124.photobucket.com/albums/p33/B450r/misc/?action=view&current=a016.mp4

 

[4X4HIGH]

Oh crap, you've got that noise that is dreaded. The dreaded good luck finding it noise.

Seriously, it could be a broken flexplate since you said it will make the noise even sitting still.

 

[lectric80]

Sounds identical to the noise I am getting from my Safari, and I like Scott suspect the flexplate is cracked. Unfortunately there is no way to get to it on the Safari, no inspection cover that I can see, so I pretty much have to pull the trans to verify. Mine seems to be a bit worse when it is cold, and it is very hard to get the sound once the engine/trans is up to temp.

 

[K85 Octane]

damn, well the broken flexplate would really really suck considering it's a brand new gold HD unit, the thick one and specifically weighted for the 400sb. I put some blue locktite on too. I'll check that out tonight, thank you sirs.

 

[chalet2506]

sounds like the "turn up the radio" noise to me.

 

[TheBeast_88K5]

sounds like the "turn up the radio" noise to me.

Yep....

I have a few of those.
I crank up the tunes.

My BRAND NEW transmission makes an odd noise, here and there.
I call it character.