Spark plug change

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Rampitt

Senior Member
Joined
Feb 19, 2016
Posts
248
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60
Ram Year
2005
Engine
Hemi 5.7
What spark plugs do you guys like? I was thinking NGK or do you guys think i should go with something american?
 

justin13703

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Oct 15, 2014
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Location
MD
Ram Year
2008
Engine
Hemi 5.7
The 5.7s run best with regular old Champion copper plugs. A lot of people have negative results running iridiums in their 5.7. Not to mention the cost difference of 16 iridiums vs 16 coppers. Just use the 3 dollar coppers and change em every 30k and call it a day
 

chefred112

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Oct 13, 2010
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Location
Tracy, CA
Ram Year
2005 QC 2wd
Engine
392 Hemi
I swear by the NGK coppers (NGK 5306 for normal driving and 4306's for track days)..my truck didn't like iridiums so imo stay away from them..
 

MTLHEMI

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Mar 11, 2016
Posts
159
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Ram Year
2007
Engine
HEMI 5.7
Could I use the 4306s in a stock 5.7?
 
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