Sounds like the electric fan is horribly overworked. Besides that, I see that you don't have a bigger radiator listed in your sig. Do you have a stock radiator still? If you do, there is no way it will keep a 347 cool. You need to get an aluminun 3 row and your troubles will be over. Good luck.
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87 GT
Full exhaust, K&N, KB Subs, BBK STB, homeade dumps...
87 Taurus
New York
Winters Bite!
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