I installed a Flex a lite 180 that I bought from Summit. It is rated at 3300cfm and I love it.

On the last summer with the A/C on and while driving up steep hills at highway speeds the temp gauge barely went over half (pretty close to where it is on cold days.

The engine warms up a lot faster on sub freezing mornings and I have extra power.

To install this larger fan I had to take a hole saw and cut a half circle for the driver side radiator hose and pasenger side petcock valve.

I LOVE IT!

Black Magic fan for about 6 or 7 years now. No problems except for the t-stat died and I replaced with a Haden from the auto store. Still making noise and moving air..... <img src="/forums/images/graemlins/kewl.gif" alt="" />

I was advised not to do it due to reliability. ive also heard a few cases of overheating issues.

I,ve had a pro comp fan and hayden adj. temp. switch installed for two years. From -15 to 100 f no problem. Even while towing.

Over heating issues w/e-fans are from using a fan to small/cheap fan-claiming to be a hi-cfm, or t-stat failing(common even w/oem e-fans) or having the t-stat falling out of the radiator. The best way to avoid the issue is buy a quality e-fan like the Black Magic or use the Taurus(though it can draw more amps), and either run dual quality t-stat, or do like I do and leave the fan on all the time. Having the fan come on w/the ignition does cause the warm up time to be delayed by a few minutes, though if I wanted to I can turn the fan off with my ground interrupt(for water x-ings) to speed up the warm up time, but I am usually never in that much of a hurry. I prefer this set-up since I can here it running, and I don't have to worry about the electric t-stat switch burning out/failing.

The main thing when going to an e-fan is buying a quality one, and not trying to solve an over heating issue you already have. An e-fan regardless of its size isn't going to solve existing overheating issues.

Well the advantage of an electric fan is that there is no load on the engine when the fan isn't needed (as opposed to a reduced load from a belt driven clutch fan) thus yielding more usable power or better fuel economy.

Running it whenever the ignition is on defeats that purpose & I suspect a belt driven clutch fan would actually give better power/economy than a constantly running electric. Less strain o the alternator, too.

Dave

I know when I switch on my Taurus fan to high, the engine bogs down 100-150 rpm. The little alternator is screaming for help <img src="/forums/images/graemlins/lol.gif" alt="" />

Good thing I really never even need the high setting, low is more than enough.

If you go with a good fan, it won't be a problem.

I could not be happier with my Flex Lite 180. It works great!

The only modification I had to make so it would fit my 89 22RE was 2 half circle cut outs on the bottom to clear the lower radiator hose and drain petcock.

Summit Racing will beat any price you can find in the Net.

This place has them for $276 http://flexalite.carshopinc.com/product_info.php/products_id/71712/180

Over heating has NEVER been a problem. If anything, my trucks temp is a lot more consistant, whats more, it warms up a lot faster on freezing mornings. I let the truck idle a couple minutes in the morning with the A/C on to melt the ice, scrap what ice is left on the windows and within a half mile of driving, the engine temp is up to normal.

I will never switch back. I have gained more power, better gas milage, faster warmups, less wear and tear on the engine and more consistant operating temperature.

Take care.
Ken