Originally Posted by 351f-150
i found 2 14" electric fans for 52.95 each is that a good price. and will my stock alternator be able to push them? if not what kind should i get and how much would a better alternator be?
It's not the size of the fan, it's how hard it blows (wow...). If they're decent (1400cfm or more), I'd say jump on it. Be sure that they include all the wiring, though- that's where they'll catch you. A lot of places sell cheap fans, but when you get it, there's no wiring! (Bastards...)
I'm not sure a stock alternator would push a pair of electrics for long. Find an alternator shop and see how much they'd charge to re-wind your stock alternator for as much power as they can manage. Those 351 alternators are stout, so they should be able to get 200amps out of it. Check on that before you purchase the fans, though- wouldn't want you to get them, then not be able to afford the alternator work.
One option, to save alternator drain, is to run one to your ignition, so it'll run at all times, then run one to a dash-mounted switch. That way, you can just flip the second one when the temperature needle starts to dance and you'll save the unnecessary load on your alternator. Just an idea.
Definitely go with a local shop to rebuild the stock alt, though- cheapest way to go for a good performance alternator.