96 F150 Drivetrain noise?? Any ideas. video
 

Trying to get to the bottom of the noise my 96 f150s been making.
It's been making the noise since i've owned it, probably 10k miles
The truck has 177k on it.
Seems to only make it while on the throttle, once your off it, when it kinda neutral's out the sound goes away.
its 5.8 automatic, it drives fine just if anyone had any ideas on what it could be
Thanks for any help

Ill try and get a better vid, with less bumps and no annoying keys.

The CEL is for egr insufficient flow so shouldnt be related.