I know of the differential issue I always read about but I don't believe that's it nor is there any possible search I could do that is specific enough to what I'm dealing with.

(06 Base 350z) I can't seem to figure out this rattling noise I'm hearing while driving. It only occurs with half throttle at low rpm. It's especially bad rolling at 40 in 6th. I'm guessing it has to do with the transmission because rate of speed does not effect the noise. I could be going 25 in 3rd and hear it, and so on. Thanks in advance. Hoping to get GoPro footage in the near future.

 

could be anything bro, plastic in the hatch area.... dash, door panels... hard to say without hearing it first hand..... rattles are a pain to find and resolve, what i do is turn up the radio, hahahaha

 

Sounds like clutch chatter.