Overheating Problems!

1) Yes, both fans are sucking, not blowing. They are dual speed fans so maybe I'll try bumping them up to their max.

2) The engine runs fine (i.e. cool) when I have my blower disconnected; the only time heat is an issue is when I install the blower belt.

3) I also thought maybe it might be air in my system but I can't figure out any easy process to ensure the air is out other than starting and stopping the pump. I can only run the engine about a minute or two before I have to shut it off to avoid heat damage. I suppose I could run it a while with the blower belt off though... there's an idea.

4) Water is definitely moving through the radiator though it seems to me to be a bit sluggish. I may try taking the thermostat back out and try circulating the water around the entire time.

5) This puppy doesn't operate at speed unless I'm pushing it down a hill! I just finished building this engine and am still attempting to tune it. Can't tune it if I can't keep it from overheating though!

6) Just so you don't get confused with my setup, this is not your average 94 Mustang. The only thing '94 on it is the body. No computer, no engine, nothing. I flip a switch to turn on my water pump and I flip a switch to turn on my fans. It's all or nothing.