I have been running my 1970 Duster 340,which now has a solid cam, pretty hard lately(it sat for 7 years and I guess I’m trying to makeup for that.) Unfortunately, I was winding thirdgear tight last night, and I noticed a bit of

Plug Time

In a V8 Mopar with aluminum heads and aMopar Orange ECU, what is the interval ofchanging spark plugs, now that we all run onunleaded? It used to be 10,000 or so, but thatwas with points and leaded gas. Most of themileage is highway. I have

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