Spark Plugs??? What does every one use in their 5.7 Hemi?

With upgrades my tuner recommends iridiums as well 1 degree cooler. So if stock is a 5 you want a 6 in part number to be 1 cooler


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Back when we had a '07 Charger R/T (2007-2013) ...... a friend of mine who worked as a Mopar master mechanic for a number of years; told me that a lot of guys with early 5.7's had drivability issues when they strayed away from almost anything other than the Champion copper plugs.

When we had that car (and my '11 Challenger R/T) I stuck with the copper Champion plugs and changed them out about every 30,000 miles. Both cars ran great.

 

Also side note you run boost want to go colder as well rule is 75-100 hp each degree cooler


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Thanks for all the input Gents!!!

 

Interesting that the 2006 5.7 HEMI in the Jeep used 4's

 

There in


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Iridium plugs can cost over $12 each, which could be why some people avoid them. Around $100 for spark plugs seems outrageous to some people.

 

Do your shopping 80 buck at rockauto do a custom part search An from my racing history you get what you pay for


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