Quote:
Originally Posted by dcdoug
I will replace the plugs, but should I gap them to .040 or .045? Not sure if the wider gap caused carbon buildup as well? I was planning on just going with the Autolite 45 copper plugs again.
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I gap mine to .040 (Champion 426 - RC9YC5) -- and the MSD instructions recommend 40-45 for a gap. Over on the FE forum the choice of plugs is a hotly contested debate. Personally, I think they're all about the same.
Adjust your valves, adjust your idle mixture, put in fresh plugs, and then monitor.
