Testing Oil Pressure On A Big Block 440

Getting ready to start my 440 before putting it in the Dart. A couple of questions for you expert Moparians. 1. Do the plugs need to be installed to test? 2. What pressure/pressures should I be looking for?
Thanks a bunch!
Its easier to crank over by hand without the plugs in. I assume you are using a priming tool while rotating the crank? Id expect nothing less than 35/40 if youre clearances are correct.

Jake