AC Delco or NGK TR-55

Gene Moses · 11-20-2005, 11:53 AM

Folks:

I have a 2002 Convertible with 25,000 miles. I am going to pull the sparkplugs over the winter primarily because of concern regarding the absence of anti seize on the treads when installed by the factory. As I stand there with plugs in hand, contemplating putting in new plugs at the same time, I seek your reccommendations--AC Delco or NGK TR-55?

Thanks

RPOZ4Z · 11-20-2005, 12:12 PM

they're both good plugs.

I am using the TR-55's

V8_Club · 11-21-2005, 06:52 AM

NGK TR55s.

tjwong · 12-04-2005, 11:32 PM

I have used the NGK double platinum PZTR5A-15 plugs over the TR-55. The main reason is that for some reason I have seen mis-fire counts on my chassis dyno during tuning sessions using the standard TR-55, using either the PZTR5A-15 double platinum or the TR55IX which is the iridium version the mis-fire counts go away.

QKSLVR Z · 12-05-2005, 12:09 AM

another vote for NGK's