Although I can not view the vid right now, I do know that on these newer models and I'm only speaking from experience with the new Hemi, Ford Engines 4cyl to 8cyl, and even now I can hear it on my 07 5.3L Tahoe just not as loud as others. They have very loud lifter noise, especially at cold starts. They call this lifter chatter and that is normal. Not saying this is what you are hearing until I see the video and even then the videos sometimes make the noise louder or quieter. These things are hard to tell without seeing the vehicle in person, unless its a for sure metallic sound and its a real knock, then there is no denying it. IDK why a company would "remove piston skirts" that sounds like a bunch of rubbish. The lifter chatter sounds comes from a new kind of design that the companies use for the heads which was supposed to help them stay cooler and have better lubrication and in essence help improve MPG and HP. Which people only notice the obvious changes like noises. Lifters are really loud on the new Hemi. My mother has a 16' Charger with a Hemi and its VERY noticeable. The mustangs are pretty loud as well. Most people end up adding CAI or exhaust and the noise is unnoticeable at that point.
