Re: AC 43LS Spark plugs
Posted by PackardV8 On 2007/4/17 21:37:44
According to my 1976 FACTORY AC Delco book, the 55-56 Packard V8 uses 43LS (7/16" reach). R45XLS or 45XLS 3/4" reach. Note that the "R" indicates resistor plug.
It's AC which means This Is Biblical.
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