Anyone that thinks they can tell how tight something is torqued "by hand" is fooling themselves.
Sometime I'll tell the story about replacing the casting plug in the end of a 383 head...with the engine in the car....on the end that faces the firewall...without removing the head.
I'm about to do that on a 440 Chrysler 300. My plan was a plumbing bar clamp. I would be very interested in his way.