Rebuilt 273 - starting for the first time! Help!

Wow thanks for all the info fellas! Unfortunately I just put everything on hold, I heard a gurgling sound and saw I had a red fluid pouring out underneath the car. Hmmm, first thought was tranny fluid ( it was seeping from where the engine meets the tranny). Checked my oil level and guess what...no oil! Glad I chose the right mechanic for the job. I'm going to go bang my head against the wall for a few hours. If I'm still conscious I'll diagnose the issue tonight.