I'm considering going full time electric fans on my 69.. and completely doing away with my power robbing flex fan (i have previously mentioned how i could not get fans deep enough into the shroud to pull air properly, but found one flex fan that does and it steals my power)

I think if I go full time electric, i can find cooling happiness.

Any recommendations, or does anyone here have a setup like this?

Davey , not sure if I posted on your earlier quesations , but I had this ( electric only) on my Sebring w/ V8...( because of space constraints) and I wished all the time I could put a "real" fan on instead....reason was the whining sound that just about drove me crazy...

my fan is very very loud... sounds like a tornado under the hood... i just wish normal fans fit properly... this dang fan sucks away my power

i dont know if you mean full time electric as in -it stays on all the time. if that's what you mean, you dont need that, and yes, they often do make some noise. some fans are probably noisier than others.

you can hook up a toggle switch and turn it on manually when you need it, or you can get a temp sensor switch which will turn it on and off at certain temps. you shouldn't need the fan unless you are going less than 20mph.

I have a 69 350 with a flex fan and don't have any serious over heating problems. At a long idle it may get up to 220-230, but goes right down to 180 while driving. I was having it cheked out and had the idle running high and it stayed at 180 so the flex fan does work. Make sure the cooling system is clean, t-stat works and there is a product they sell that when mixed with coolant will lower operating temp. I did not try it but the parts store guys say it works. Good luck

well in its current state i have yet to see the car reach 200, i let it idle for 20 minutes once and it stayed 195 max.

The fan on there is pulling a good amount and possibly excessive amount of air. The problem is that the darn thing eats up my power..... which is why i want to go strictly electric and no fan on the pulley.

I'm just curious if any one has gone strictly electric with no engine fan.

Davey, I am planning to go electric with no pulley mounted fan as well. Just get one that moves enough air. I plan to use a thermal switch with mine so no additional wiring or toggle swites will be required....already have enough.

well, Drew , with your 'mufflers', you MAY not hear the fan! lol

What kind of flex fan do you have Davey? Are the blade really big? And how many?

The idea of a flex fan is to give maximum air flow at low RPM's, and as the RPM's go up, the fan will flex, or flatten out pulling less air (as air is being forced through the radiator) and creating less resistance, and robing less, if any power?

In theory, it shouldn't take much power from your motor at all. That's why I ask?

Hope it works out! -

Brett - 67 Drop Top 455 (with a flexfan)

Don't forget that electric fans don't run on free power. They put more load on the alternator which will also rob your power. Theoretically, the electric fans are probably less efficient to move the same air since the alternator must convert mechanical energy to electrical and then the fan motor converts it back to mechanical with heat loss each time.

Davey,
Here is a snip from a previous topic that I responded to... It might help ya...

Tony


</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> I had a non-clutch, aftermarket 4 or 5 blade in there, ran very hot. I got the kit, which included the dual fans, thermostat, brackets, wiring, and relays - I think it was around $500. I called be-cool, because after looking at their website, I still had no idea what to order. They were extremely helpful - they will need to know how wide your radiator core is (Not including your side tanks) to get you the right fans. As Bjorn said, get a puller fan and mount it on the engine compartment side. By the way - the thrmostat switches on the fans at 195 and off at 165 (i think) - while idling in takes about 3 minutes of fan run time to drop that 30 degrees!!! You can also wiring so one of the two fans goes on via the thermostat, and one manually, or both manually... I can send pics if you'd like to see my installation. </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">

I beleive it to be an original pontiac/firebird fan.. hard to explain but its big and heavy 5 blades that fit half way in the shroud and half way out of the shroud... yesterday i installed a larger diameter water pump pulley and it seems to be acting better.

Haha! It's not LOUD is it?

The only time you would be able to hear my fans would be after the car is shut off.

Davey

Sounds like you're on the right track. I have the kind of fan you described and it does have a big diameter pulley so it doesn't turn that fast. Years ago I had a 73 cutlass with a viscous drive fan with overheating problems. I fiddled with the fan until I screwed it up and locked up the viscous drive unit (fan clutch). It sounded like an airplane trying to take off but it sure did cool the radiator. I think you were trying to turn your fan too fast with the small pulley.

I went electric and used the cool down coolant, I still had overheat, I went with a Flex fan and Electric, I also put on a much smaller pully to the water pump, I stay around 179 unless it is a long idle then she may go to 190, if I rev her up she will go back down. I did take off the electric fan to see if that made a differance and it did not, so I put on a trans cooler.