ls1 cold start. piston slap? - YouTube

ls1 warm up, piston slap? motor has been running 5 to 8 mins - YouTube

what do you guys think?

i was told motor has made this noise since motor was put in 4 years ago.

truck runs very good no leaks and no smoke.

I have changed oil (runing 10w 30 non synthetic) no metal or anything in oil

thanks

 

Sorry I can't make out sound in video microphone picking up too much. But this is easy help for you. Is the noise at crankshaft speed or camshaft speed? That'll tell you if its lower end or valve train. 2-1 crank to cam

 

I'm not sure bout sound speed
I will look at it again and try to make a better video

I was hoping more would chime in cause the more I read a lifter problem is pretty common if that's what it is.

If it is what lifter do I go with? Ls7?

Thanks