Funny that the discussion when this direction. This is exactly what I did with the plugs on my Ram's V10. I switched to the long-nose plug design used in Vipers and there was a difference. In reading up on this on Ram Owner's Forums, the theory was that moving the point of initial combustion closer to the top of the cylinder had an effect similar to advancing the timing. I'm was pleased with the results. -Spro -------------- Original message -------------- From: Tom Jennings <tomj@xxxxxxx> > Oh that's what I assume too. The L vs. non-L seems a bit subtle, > I imagine in instances where for some reason you need the tip > pokin deeper into the combustion chamber but don't want hotter. > > _______________________________________________ > AMC-List mailing list > AMC-List@xxxxxxxxxxxx > http://www.amc-list.com/mailman/listinfo/amc-list > > or go to http://www.amc-list.com _______________________________________________ AMC-List mailing list AMC-List@xxxxxxxxxxxx http://www.amc-list.com/mailman/listinfo/amc-list or go to http://www.amc-list.com