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Custom Dodge Ram Performance Mods - Engine - 5.7 HEMI V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 5.7-liter HEMI® V8 engine - 390 horsepower, 407 lb-ft of torque.


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  #11  
Old 03-27-2011, 01:10 PM
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Thanks Randy. Didn't move here until late August last year and I think the summers occasionally break 100 degrees but I'm more concerned for when I get stuck in traffic and there is no air flow. Any of your pubs have some numbers on the fan that we could maybe cross reference for more info?
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Old 03-27-2011, 01:17 PM
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Unfortunately Chrysler doesn't publish any info on the CFM specs of their fans. Keep in mind that the electric fan is in place to supplement the engine driven fan and won't move as much air.
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Old 03-27-2011, 01:20 PM
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no problem. I'll prob just leave the mech one on and maybe get a better replacement electrical one.

I don't want to be the guinea pig and get stuck in traffic and overheat...lol.
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Old 03-27-2011, 01:32 PM
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Quote:
Originally Posted by RamTech View Post
I think cooling efficiency will depend on the ambient temps where you love. In VA, you may be ok but I wouldn't try it if I lived in AZ. I have a special tool that utilizes an air hammer for fan clutch removal. Talk about making life easy! http://www.thetoolwarehouse.net/p-3127-lisle-43300.aspx
RamTech has all the cool tools!
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Old 03-27-2011, 01:36 PM
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I believe a lot of people never consider why mechanical fans are still used even to this day. First, consider the applications. Mechanical fans are used with longitudinal engines. These vehicles tend to be heavier and more powerful which places increased demands on the cooling systems. On the new Ram with a Hemi, you have a 390 HP engine driving that fan and lets say it takes 10 HP to drive that fan at its max rated output. Now if you've ever seen a 10 HP electric motor, you know how friggin huge these things are and they just aren't practical for mounting in an engine compartment, let alone between an engine and radiator.
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Old 03-27-2011, 04:58 PM
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I know what you are saying and there has to be a good reason we have the mech fan. I'm just looking for "a little" more like everyone else. I was looking at the Viper elec fans too. Did the Viper have both a mech and elec fan?
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Old 03-28-2011, 12:16 PM
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On my 03 2500 Hemi I ran a Black magic 180 fan with Jet 180 stat.
The fan never came on while driving,and even sitting at a light it would only come on for less than a minute.
The electric fan had a much harder time cooling the motor with the stock 203 degree stat.

I towed with this setup for 5 years 6 days a week and never had a problem with it until I installed uncoated headers.
This created to much underhood temp and truck actually overheated if siitting in traffic.
As soon as I had them coated i never had another problem.
I will get a 180 again in the spring and put it into my truck to help with towing.
Great mod if you buy a good fan.
The Viper fan draws way to much power,and will cause you huge headaches.
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Old 03-28-2011, 08:53 PM
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the Black Magic 183 elec fan is designed for the 03-08 years....anyone think it'll fit the 4th gen??
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Old 04-01-2011, 03:33 PM
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does anyone have a pic of the water pump pulley with the fan removed? once you remove the mech fan assembly do you have to put anything back on to keep the water pump pulley from coming off?

or is the w/p pulley pressed on?
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Old 04-04-2011, 11:52 PM
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hey guys I removed my fan....put a 180 motorad thermostat in...and it has been working fine.....driving around town and sitting temps have been 184....the highest then goes back down to 177.......I even let it sit in my driveway and let the e-fan kick in at 222......and it cooled it right back down to 180...with in seconds.....Oh 2011 ram 1500 5.7 and the pulley is pressed on, so just remove yours. ps, looking at the truck turn right to loosen......So I'm just waiting for Diablo to come out with support for the preditor...so I can go in and change the temp of the e-fan to come on at 180.....
Good luck guys mine is working fine.....
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