Throw that electric fan in the garbage. It will never move the air that is required. Factory shroud and 7 blade fan and the HD Hayden fan clutch is all you need providing you have the divider plate clearanced properly.
I agree with bigchief, after $600. in a be cool radiator, a FF Dynamics extreme electric fan. I still had heating issues, my bird still would run at 210, until I hit traffic then it would creep up, this totally sucks. So after reading an article on Team Chevelle, they suggested just what bigchief said, 160* thermostat from Auto Zone, the "duralast" brand, Hayden Clutch with 7 blade fan, 70% distilled water 30% antifreeze, factory fan shroud, seal up all around the radiator and, what do you know, I tested it this weekend, went on a 600 mile trip to a car show/parade, and my Bird stayed between 185-190 this is the best temp it has ever run at, even over 2 passes. During the parade it would creep up to 200-205, but holding the RPM at 1500, it would come back down. I am a true believer in this setup and will recommend this to everyone with temp issues, plus, I have a really nice FF Dynamics fan with shroud for sale.
