ratrace427 Posted July 1, 2017 Report Share Posted July 1, 2017 I have a check engine light that i keep clearing out every few weeks. I have closed the gap on the plugs to .022 i think. They really should not need to go any smaller. I didnt write down the plug part number down to look them up but they must not be copper core. I have a good knowledge of plug designs but when it comes to temp range it is a trial and error thing. What temp range do i need for a 650 hp super snake? thanks john Quote Link to comment Share on other sites More sharing options...
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