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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 11-27-2010, 09:55 PM
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Vehicle: 2004 Ram Off Road 4x4 Hemi
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Engine: 2003-2008 345ci (5.7L) Hemi V8 345hp 375lb/ft
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Quote:
Originally Posted by gossemer75 View Post
Hey citizen, how do you like the iridium???? How long have you had them, did ya notice any gains? I have a '04 with a Hemi as well and I'm in the process of searching out new plugs....
They've got close to 50,000 miles on them, I pulled the left front plugs last oil change and the plugs are burning great with no change in plug gap. I didn't pick up any noticeable MPG's or HP but the engine runs much better on crap gas then with the stock plugs. Are they worth the extra cash? To me yes, because I can run cheap 87 octane gas with no loss of power.
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  #12  
Old 11-29-2010, 10:22 PM
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HEMILANCER HEMILANCER is offline
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copper plugs perform better than platinum and iridium. copper has lower resistance allowing the coils to fire them easier the platinum and iridium are used because they don't wear like copper so you get a truer spark throughout their life
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  #13  
Old 11-30-2010, 07:27 PM
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age525 age525 is offline
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I would just use the NGK 5306's
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