How to prepare for engine dyno?

mbaird said
well the motivation to dyno this engine came while I was underneath my Barracuda changing a leaky main seal and saying out loud... Mother freekin rattin drattin... I WOULD GLADLY PAY SOMEONE 500$ TO CHANGE THIS FOR ME !...LOL

This dyno session is simply for tuning , leak checking , break-in ( or breaking) and curiosity.

I do hear you saying a lot about leaking and worrying about leaking. Personally I seal everything with the "right stuff". And knock on wood I have sent nothing out leaking. As matter fact the 11.5 motor in questioned (the relevance of that is the hysterical part) has been drag racing and hell-bent Street driving for over 4 years now and never even a spot of moisture let alone a drip.
I can't think of anyone who wouldn't like a Dyno sheet. Or some dino time to fine tune their motor.
I assume if something like your oil pan engine leaking they're going to point at it and say that's where it's leaking you need to fix that? Like in 4 or 5 hours are you playing to reseal the oil pan? And try it again? As far as breaking won't they just get the motor fired up right away and bring the RPM's up and very them for 20 minutes or so? Not quite sure what the dino does different in this process? I guess air-fuel ratios could be monitored better? Butt for me I had an O2 sensor and a known good running pre-existing carburetor.
I guess my real question is have you broken Motors in before and you just don't want to do it or?