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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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  #1  
Old 03-26-2011, 01:28 PM
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Default 4th Gen elec fan cfm?

Like the title says...I'm trying to see if anyone knows how many CFMs the stock electric fan is rated for on the 4th gens.

My 180 t-stat is in, getting ready to install my u/d crank damper and remove the mechanical fan and I would like to know if the stock elec fan is sufficient to cool the truck in the summer and yes I have a Predator to change the on/off settings. If not, no big deal I'll just leave the mech fan installed or maybe look into a better elec fan replacement like the Taurus or MK VIII fan.

Thanks.
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Old 03-26-2011, 01:44 PM
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interested in this as well
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Old 03-26-2011, 07:54 PM
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also want to know this i hate the idea of a mechanical fan
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Old 03-26-2011, 10:06 PM
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I'm hoping that I'm wrong but I don't think Dodge would install both if the electric fan was able to hold its own.

tomorrow I'll try to pull the p/n and/or brand off the elec fan and do some googling
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Old 03-26-2011, 10:24 PM
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I'm gonna do this after My DSP is in!
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Old 03-26-2011, 10:30 PM
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Timmy, if you can figure out how to loosen the fan without the pulley spinning let me know that too.
Attached Files
File Type: pdf Viscous_cooling_fan_removal_[1].pdf (56.2 KB, 37 views)
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Old 03-26-2011, 10:51 PM
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Quote:
Originally Posted by gabrieldy View Post
Timmy, if you can figure out how to loosen the fan without the pulley spinning let me know that too.
Your attached file states/shows -
Quote:
A 36 MM Fan Wrench (1) should be used to prevent
pulley from rotating.
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Old 03-26-2011, 11:03 PM
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I read that but couldn't make out the crappy line drawing. Guess I'll head over to the autoparts store and see if they have it for loan.

It'll prob make more sense once I see the wrench.
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Old 03-27-2011, 01:06 AM
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Here it is -


Spanner Wrench 6958
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Old 03-27-2011, 01:11 PM
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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
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