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Custom Dodge Ram Performance Mods - Engine - 4.7 Liter V8 Discuss modifying your Dodge Ram with Performance Parts and Accessories!
Factory Spec: 4.7-liter V8 engine - 310 horsepower, 330 lb-ft of torque.


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  #1  
Old 11-20-2010, 03:07 AM
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Default Intake Manifold

So what companies make after market Intake Manifolds for our 4.7 engines? A better flowing manifold and a bigger throttle body would do wonders for the power of the motor.
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Old 11-20-2010, 08:07 AM
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That's a good question, I've never heard that anyone does, but if you find one come back and let us know for sure.
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Old 11-20-2010, 08:28 AM
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Air Ram does

AirRam
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Old 11-20-2010, 11:18 AM
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yeah, I believe AirRam's is the sulivan "hi-rise" intake manifold. They have some videos of it on you tube that are pretty impressive! That's the only aftermarket manifold I've seen for the 4.7's.
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Old 11-20-2010, 11:36 AM
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ya but you have to some moding to get it to work and i dont think it is emissions legal
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Old 11-20-2010, 04:49 PM
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What type of modification are you talking about? I am not to concerned about emissions as much as I am power and torque. I will look into it and let you guys know what I find out.
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Old 11-20-2010, 05:06 PM
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OK, research is over, the cost to benifit is way off. $1700 for a 20 horse power increase over stock is not that good. For a little more you can ad a supercharger or a turbo and get much more power increase without all of the modifications. I will keep looking for a cheaper alternitive and hopefully find something soon as this truck needs about 50+ more horse power.
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Old 11-21-2010, 07:18 PM
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The OEM manifold from a 4.7 HO found on Dakotas and Durangos is supposed to be a small upgrade in performance. A little more flow I guess. It would only be an upgrade on the Pre 2007 engine, as the newer one is already got something different I suspect. Do a google and you'll see what I mean.
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Old 11-21-2010, 07:49 PM
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(4.7L) PowerTech V8 235hp
2002 Dodge Ram 4.7L with Sullivan Single Plane intake manifold was being put together by someone in here back in October 2009 to run on the 1/8 mile
here is the thread
http://www.ramforumz.com/showthread.php?t=43108&page=2
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Old 11-22-2010, 03:00 AM
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your best bet would be to remove the stock1 and have it ported out, much nmore cost effective
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