Hi Al,
Well, I've broken in dozens of new engines without it, so I think this one will be fine too.
I did crank the engine with no plugs and got oil pressure eventually. A right rear camlobe is very unhappy, so I need to recheck the clearances. Also found a fuel leak from a short section of rubber hose under the car. Guess it cracked just sitting there...
Still need to install the alternator, fan, PS pump and add coolant.
bye,

Csaba