No offense to anyone, but after 2 years of mucking around with every electric fan sold, i went back to manual, and it solved all my problems.
[WANTED] - Stock V8 Radiator for A-body
The thread started with me looking for a smaller (read thinner, 2 core) Rad, because i was convinced by big 4 core Griffin was too thick. AJ/FormS is totally correct here, from my experience. I learned from all this that the rad is hardly EVER the problem. In going manual, my coolant looked great inside the cap, only to find pounds of rusted sludge in the engine and on the bottom of the rad. Since i just went through this, here's what I'd do:
1. Listen to AJ/FormS
2. Drain and flush the **** out of your system; put the water hose inside the coolant ports in your engine and make sure it all comes clean.
3. Get the 7 blade AJ talks about, it made all the difference with me.
4. Check for stuck thermostat. possibly remove (temporarily, don't roast me) to see if problem changes.
5. Your hoses could be so wasted that their collapsing under a load, heard of that too.
6. I also read somewhere that someone's water pump vanes had rusted/worn/whatever right off. No impeller=no movement.
Your actually in much better state that I was. My rad was twice as thick, so there was near no chance i was gonna cool the car, but these methods worked for me, good luck.
