cooling headache!!!

there's no coolant running though the system wtf!!!! motor temp went to 250 and the radiator is ice cold..... been trying to break-in my motor for some time now... but the dang thing motor is nothing but problems!!!!
i have all new parts on this 360 what could be wrong??? some one please help me out before i end up junking this peace of shhhhhhhh

new water pump
new thermostat

what am i missing?