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  #1  
Old 10-29-2013, 03:50 PM
hutch74 hutch74 is offline
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Default Spark Plugs

What you you people recommend for spark plugs in my 5.7 Hemi? Are there performance plugs out there? Are they better than the regular plugs?

Thanks

Hutch74
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Old 10-29-2013, 07:30 PM
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There were a couple of threads floating around about some Iridium plugs for police applications not too long ago:

http://www.ramforumz.com/showthread....ht=sp-143877aa

http://www.ramforumz.com/showthread....ht=sp-143877aa

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Old 10-29-2013, 10:34 PM
huntergreen huntergreen is offline
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popular opinion is to stick with stock for best results.
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Old 10-30-2013, 12:37 PM
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I would stick with stock. They are cheap and changing them yourself only takes a few hours.
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Old 10-30-2013, 12:43 PM
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OEM plugs.

and yes, simple to change. two hours max.
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Old 11-13-2013, 06:44 PM
terry littlejohn terry littlejohn is offline
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what are the stock plugs? champions copper
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Old 11-13-2013, 07:04 PM
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Check out the Rockauto website
I just bought the OEM NGK plugs for my '09, best price that i could find & delivered quickly
the OEM Champion plugs are posted there too

I first changed them at 42,000 miles & again at 97,000 miles
i noticed this last time that the center electrode on the edges was wearing down





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Old 11-15-2013, 11:03 AM
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Default Spark plugs

There are no "special" spark plugs which would improve performance or gas mileage over the OEM's. For sure if there were such a thing, all automotive makers would already be using them in order to remain competitive. So, point is, the OEM's are the special ones and best you can buy. Factory engineers have already figured out which plugs are the optimum choice for every vehicle, and they are not going to shave performance to save a dollar or two because that would hurt vehicle sales. On a related subject, I do not advocate do-it-yourself plug changes unless you are both experienced and have the proper torque wrench. Given today's engine metals, tolerances, and do so at cold settings, I believe that it is imperative to be right on with factory specifications. Yes, dealer service charges are outrageous and over priced, but taking into account the life of modern plug technology, the cost is virtually nothing on a per mile basis. Gone are the days of yore when cylinder heads were made of iron and all one needed were a wrench and a 'feel' for what was about right.
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Old 11-15-2013, 12:45 PM
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Quote:
So, point is, the OEM's are the special ones and best you can buy
Usually OEM are the cheapest priced component that meet the minimum requirement. With that being said....plain plugs appear to be the best choice for the 5.7. No need for quadruple iridium or unobtainiam plugs.
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Old 11-16-2013, 09:45 AM
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Just had my truck to the dealer for an oil change.
It is just over 50,000 km (30,000 mi )
That seems like a very short life for plugs.
I know they want more business, but what do others here think is reasonable lifespan for the plugs?
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