I agree with:
A stock dip stick in a stock dip stick tube will read full at the full mark...... doesn't care how deep the pan is, or how much
oil you put in it. Just don't exceed the full mark and you won't put the crank in the
oil.
The
oil level relative to the crank remains the same. If you have a stroker crank, windage tray and deep pan, you can run it a little lower. To fill the oil lines and cooler, I always prelube the motor by turning the oil pump with an electric drill prior to fire up. This prevents running the motor for five seconds without oil pressure as you pump the air out of the lines. Also makes it easy to see how much oil your lines and cooler hold, usually 1-2 quarts. They make special prelube tools, but you just need a socket, 1/4" drive extension and a little tape to hold them together. I had to turn the socket's OD down in a lathe to get it to fit through the casting, but my fellow mechanic's sockets fit fine.