G3 Spark Plugs for 5.7 HEMI
Record Breaker
Joined: Oct 2005
Posts: 1,276
Likes: 0
From: Las Vegas
even the dealer says not to run platinum or anything, just plain ol champions. platinums run too hot and you need a cool plug. that is straight from the dealer that my truck is at right now. plain stock champions will run cool enough not to damage anything is what they said.
Veteran
Joined: Oct 2008
Posts: 254
Likes: 1
From: Long Island, NY
Just replaced my plugs on my 02 with 5.9L Magnum for the first time. The gap on the plugs was more than double what it should have been and they were never changed before. I did them with the truck at 59000 miles. The back 2 are a bitch to get to. Put in NGK V-Power plugs. Runs so much quieter and is a overall huge improvement.
All Star
Joined: Mar 2005
Posts: 752
Likes: 0
From: Tracy, CA
...I run a cooler plug (ngk 4306's) because I've done some modding and want to run safe..went to the track today and ran a personal best of 13.10 in my na qc hemi...oh, and I also turned 147k miles at the track...
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Registered User
Joined: Jan 2009
Posts: 8
Likes: 0
From: Houston
Hey thanks for the info. I did buy the G3s already but paid $5.99 a plug at Summit Racing. Anywhere else you would pay $9.99 a plug. I am going to check some prices on the NGKs. I run NGKs platiums in my integra and love them. Also that is what Acura/Honda puts in there motors. I thought NGKs were more for imports cars, so I never thought to look into them for a HEMI. Well I guess I learn something new everyday. Thanks again.
Professional
Joined: Jul 2008
Posts: 143
Likes: 0
From: Iowa
No miss fires the only codes i have thrown was my evap.. i replaced the dry rotted hoses and when its super super super cold ill throw the cam position sensor. ill take a picture of my plugs for you guys and show you
Professional
Joined: Jul 2008
Posts: 143
Likes: 0
From: Iowa
Also here is a little helpful hint for everyone in the future. dont know how many already do this but take a piece of vacuum hose inside diameter big enough to fit on the spark plug snugly when you break the plug loose you can pop this on the tip then spin it out and to the opposite when putting a new one in that way you are not going to change a cross threat its hella easy to change plugs with that.. here is the picture of the plugs i had in i dont think they were ever changed...
Last edited by bulletperformance; Jan 11, 2009 at 05:03 PM.