valve chatter 360 magnum

TrailBeast said
Not sure I’d say that as a general rule.
My Magnum had 96k on when I inspected it, and everything still looked like near new inside.

I probably have well over 125k on my Magnum.
With 5-20 oil it’s 60lbs at startup, 55lbs at full temp (190) running down the road at 55 and 35lbs at hot idle.

And there is still a little lifter ticking.
Just like you said, goes away or can’t hear it at rpm.
Just got used to it after years.

Yeah, maybe. Those engines are 15+ yrs discontinued though. Finding a low miles one these days ,only by luck of the transmission going bad or wreck... but then sitting through hot/ cold weather condensation... infrequent oil changes is another one... the oil from blowby becomes acidic. I think doing the bearings n seals is good move.