Best Spark plugs - LS1 - HELP
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Joined: Sep 2001
Posts: 4,411
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From: Wilmington NC
Re: Best Spark plugs - LS1 - HELP (dsg049c)
I am installing TPIS headers on Wednesday and might as well replace the spark plugs.. Which ones are the best????? Thanks for your input..
:grouphug:
:grouphug:
You are going to get different opinions on this but I feel the the new ignitons throw such a spark that the advantages of copper plugs are no longer there or are so small that they aren't worth the hassle of frequent changes.
Also the folks at NGK E_Mailed me and said the Iridium was their highest performing plug. I dynoed my car and it showed 316 (SAE corrected) with just a Z06 air box) with the NGK TR55IX iridium plug. Corvette is now using their version of this plug GM# 12571164 Delco #41-985) as the OEM plug and are claiming 100K so it's one of those things that you should be able to install once and not do again for a long time.
Take a look at http://www.rockauto.com/</a> if you want to buy the new GM iridium plugs and <A HREF="http://www.sparkplugs.com" TARGET="_blank">http://www.sparkplugs.com for other brands including NGK.
