Just want to know if this plug is ok. does it look like it's the wrong heat range. It's an NGK TR6 in a tuned and cammed LS1. It's done 18K.
looks fine to me. is that a touch of gunk on the end of the anode though?
Looks fine to me, Give them a clean with a wire brush, an you are good to go.
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Originally Posted by garth