Spark plug read?

[ZR9B]

any input on the reading of this plug? I think it could use a touch more fuel. It was pulled after a few w.o.t down the road with some mellow driving for about 1 mile to get it home..no idling. Plugs have about 300 miles on them.. I know that is not the best way to read a plug but that was best I could do....It seems that today's fuel does not color a plug like they used too.. BP 93 octane fuel autolite 85 in a 440 about 9.5 to 1 holley 800 headers lunati .513 .533 276 288 . any input would be helpful....thanks

 

[lewtot184]

the carbon around the rim looks like fuel is ok or maybe fat; depending on if plugs were clean at WOT. the strap looks like the heat range is a little hot.

 

[bigmanjbmopar]

I would say they look normal. I run champion race plugs with a similar set as your s except stroker motor with aluminum heads. Colder range.

http://www.jegs.com/PDFs/ChampionRacePlugs.pdf