i just bought my z28 and it sat at least a yr without starting. the engine gets up to temp good but i only get cold air coming out of the vents. i had a broken cable inside and i fixed that and still no heat. i took off both heater hoses at the engine and blew them out and water is going thru. what am i missing here. any help is greatly appreciated

 

another question. which way is the water flow, does it come from the water pump thru the heater core to the intake or is it the other way