I have a 2013 ls3 that I got out of a camaro which is now in my s2000. It seems the engine is making a loud almost metal grinding noise?

I have a before cam swap video and after cam swap video. I think I hear it in the before - obviously in the after.

Is this a cam surge noise ?
is it normal?

Car is running on holley terminator x. No tune yet. Still putting the car together. Havent had it to full operating temp for the holley auto tune to smooth things out either


before cam
https://youtube.com/shorts/fQReRwnKBxg?si=ZW0dcDRJeic9ZwHi

After cam and supporting mods
https://youtube.com/shorts/oGmigPg3Hjo?si=OtC5jQ-8FrUuhRbC

exhaust idle
https://youtube.com/shorts/gCImeE1xBuI?si=yperEcyGuSrxYOtp

 

All I hear is your throttle body sucking air. Put the air intake on it and take another video…