I just dedided I'm going to buy that 3000+cfm fan. I have a FlowKooler High Volume Water Pump. I imagine a decent fan,Hypertech 180 T-Stat, and this water pump will be good enough.I even have a digital fan control gauge to turn the fan on/off any temp. I'll post some pics after I get the new engine in. I'm still in the LONG process of porting/polishing/cutting the runners on this "Keg" intake.

Bad decesion Durango911.

1) Not enough air
2) To much money compared to other options

Go for the MarkVII like the rest... or dont. Just don't bitch about it later when we can say "I told you so". LOL

IndyD

If you have the max cooling package, those radiator are 4 core radiators and I saw alot of efan's states not made for 4 core radiators.

I dedided to stay with the clutch fan. I like having a 400hp durango that looks completely "stock"! I'll eventually put dual electric fans on but I want a custom shroud so it covers the entire radiator and looks good.

It's been 2 weeks since I got back and I thought I'd give an update on my...even though I've not really had it working right yet.

Before I left, My average was 14.5 MPG. Big increase in mileage. about 2.5 better. I was having trouble getting my fan to work. I had it wired to come on with the key on low and a switch for high. I had to use the switch to turn it on and had only one speed. I couldn't figure it out and went with it. (I took the regular fan with me though, just in case) Well come to find out, one of my speeds was burnt out. thus, it wouldn't come on. Which one, I'm guessing low wasn't working. The middle wire. Does this affect the high speed, I don't know. But if Not then the fan definitly will NOT work when towing. A week after I got back the fan quit completely and I put the clutch back on.

On my way, it was about 88 degrees. Mountainous and I ran about 200 degrees most of the way. Once I got up to 210 and almost pulled over to switch fans. I had to keep the Over Drive on so as to keep the RPM's down abit more. With the OD off I would of been about 210 or more the whole trip. I did average 12.5 MPG though. which was nice and I could not believe the difference in power. I would really like to get the elec fan to work if possible. I'm going camping again this week and it will be about 98 degrees and humid. If I can get a new one by then I will try again. I'm only going about 45 minutes though this time.

I don't know if one speed being burnt out will affect the total preformance of the fan or not. I just moved the pigtale to the side so next fan will be plug and play. After I get it and know both speeds are working right, I'll give another update on towing with the elec fan. But right now, it's looking like a big negative....

I'm going to double check and make sure I have a 180 stat also. If you do put a fan in your D though, don't waste your money on the fan control. That thing was a waste... Use the schematic found here in post 20: https://dodgeforum.com/m_817322/tm.htm

the 210 and 200 you mention are those with the efan or clutch fan.

Just remember, when your D hits 210 degrees, the computer will put your D in limp mode, meaning you will lose power and MPG'S. This is design to try to save the engine from burning up.

that was with the elec fan. It went into limp mode 1 time for less than a minute right when I came out of the mountains.

I put a severe duty fan on it for my trip. It still got hotter than I like. At this point I'm unsure if anything will keep it at the temps I want when towing....

I'm going to Niagara Falls in 3 weeks. Maybe I'll get another elec fan and try it anyways. One, hopefully, that works right.

cesspool,

What set up are you running again?

IndyD

Hey cesspool...where are you traveling from on your trip to Niagara Falls? I live 10 minutes from there and the weather should be max of low 80's to upper 70's about then....I might have my electric fan installed by then, but I don't tow anything so don't know if I can give any info on truck temps in this area...