First Startup Since 1988 - do this sound normal to you - help

[Rgx01]

1970 440 startup and Camshaft Breakin

https://m.facebook.com/story.php?story_fbid=10209365497452567&id=1777767090

[Back N Black]

Sounds good to me.

[Kern Dog]

I hope that is a solid lifter cam. There is some clatter that you'd expect from that. It does sound good IF it isn't a hydraulic cam.
I do hope that you rearrange the wiring better. It looks like a rat's nest in there!