Quote:
Those plugs shown above are stock heat range 09+ 5.7 (Eagle). The Eagle heads use a gasket type plug, the 08 and older 5.7 don't use a gasket and have a bevel that seals the plug to the head.
A 1 step colder plug for an Eagle head (copper) is LFR6C-11 (NGK).
That is what prompted the question, i have had 6.1 plugs in there for over a year. What is the stock number for that plug
Gen 3 power 6.22@110, 9.85@135 Follow @g3hemiswap on instagram
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