Quote:
Originally Posted by NOT A 45
It's been my experience working on cars for over 38 years that you just can't go wrong using what the car was built with. Now I'm sure with modifications the heat range may change, but my recommendation still holds. GM-AC delco, Ford- Motorcraft or Autolite, Mopar- Champion. In sticking with what the manufacturer uses I've never had a problem.
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This. Stock parts will always last the longest and typically be the most comfortable and best for the car. I use NGK TR6 plugs because I heard they were the best for what I have done to my car. My tuner told me he has the best experience with TR5 sparkplugs cause they're relatively similar and they're cheaper. He said its better to buy the cheaper plugs and replace them more often rather than buy expensive plugs just to get a little bit more life out of them.
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2011 2SS/RS 6M: Hurst Short Throw Equipment, Speed Engineering Headers, Spectre CAI, BTR Stage 3 Camshaft 229/244 .630"/.615" 113+4, Chromoly Pushrods, .660" Springs with steel retainers.