A couple of weeks ago on extreme 4x4 they talked about improving mpg on a ram. thier idea was replacing the clutch fan with an electric, but they neglected to inform us what the cfm of the electric fan was. I learned later it was an 18" fan, but I still would like to know what the cfm of that 18" fan is. Or what kind of cfm is required to keep a 5.2 auto 1500 as cool as factory. any help would be appreciated. I have allready installed flowmaster muffler with duel outs & spectre high flow air filter. The improvement is noticable & it sounds GOOD

 

This is what BigSlick used, meant for our Rams, so I am sure the CFM is more than adequate for our V8's

http://www.ffdynamics.com/ramB.html

 

thanks for that link , how does it bolt up ? and how does know when to turn on ?

 

It uses zip ties through the radiator, IIRC. Not a good way to bolt it up, IMO, as the radiator isn't designed to support any weight like that, light-weight fans or not. The fans are supposed to be top notch, not knocking on them any, just don't like the mounting idea.

Usually a temperature probe you stick in the radiator. Make sure and stick it in the correct spot, usually in the top driver's side corner near the inlet hose.

 

Yeah those fans from FFDynamics have been really great. I do agree with jason though, zip ties prob aren't the best way to mount them, but I suppose they get the job done just fine. These units are dual 15 inch fans and pull a total of 6000 cfm. Waaaaay more than enough to cool what we got. Betty has been running about 8-10 degress cooler after install (with new 180 stat and radiator flush n fill)

But yeah overall I am very happy with them, even put the factory shroud back over it for factory look.

Noticeable power gain at the wheels, prob 7-12 HP, much colder A/C, better throttle response, and best of all I gained about 1.3 - 1.5 MPG's!!!!! City and highway mixed driving. I do recommend this setup from FF, comes with everything you nee in the kit...almost everything, had to make an extra trip for more butt splices and wire....

So, increased mileage, and truck runs cooler...WIN WIN buddy...these fans will pay for themselves after awhile

 

Thanks, sounds like I am not the only one who wants to do this or has done it, I did mount a universal replacement in a dawoo made Pontiac Lemans the ties worked good the fan wasn't that heavy. This unit will be heavier but so is the trucks radiator.

 

I think so long as you have the fans tight against the radiator, so they can't bounce around, they should be ok. If you are feeling really paranoid about it though, probably wouldn't be that difficult to fab up some brackets for them.

 

i have two 16 inch fans coming, 2750 cfm each, i have already installed the control module with temp probe. i am alse going to make a shroud out of fiberglass to guarantee stout air flow for the diesel. i was supposed to get the fans on friday but my entire ups order got delayed till monday.

it is def a mod worth doing, there is no down side to the project at all.

the curved blade fans are the way to go, they create more air flow with lower voltage consumption.

my primary reason for doing it is because it is 100 degrees every day here now, and i want my ac to work better. everything else is just a bonus.

 

well i ran a efan for about a month and it was great!!! nice bump on low end and all the wall throw the power band,, also passing people at the 40-50 kick down was better

the problem i had, i fixed my a/c so at idle with the e-fan on ,blower motor on high, the blower motor would not get engough power till i rev it up a couple more rpms and then if i turned the head lights on it would realy suck the power, head lights would dim till i hit the gas,,,,,,, now keep in mine that i was running a lincon mark VIIII fan that pull like 33amps

i would love to revist this mod, but this time a fan or two the will pull alot less amps

 

Well it ain't as cheap as the pick 'n pull Taurus and Lincoln fans, but my Flex-a-Lite moves 3300 cfm of air while pulling only 18 amps...