How tight is too tight. 512 stroker rebuild

I am finally on the engine run stand. I pulled the plugs and primed the oil with a rod. With the distributor out and no plugs in it would turn over with the starter with a battery of 11.5 volts. It turned over slowly and stopped after a few turns but it would turn over. Time to charge the battery, set the timing, get the plug wires routed, install the radiator, run the fuel lines and finish routing the wires. Then, time to break it in... More questions to come i am sure.