I'm 19 and just got done with my 1st motor swap into my 1993 LX hatch. I swapped in a 347 stroker with less than 30k miles from my girlfriends dad. It was a solid motor no problems what so ever. I got it into my car with a new 3 core aluminum radiator, 180' t-stat, stock fan and it over heats and spills coolant out the over flow when I get on the gas. I bleed it multiple times. I changed the thermostat and flushed the system. I'm running no thermostat right now and it' runs perfect, a little cool, but no problems. What could be the problem?