This plug came directly from a low deck 498” engine with dyno time only. Had 7 pulls on it and would like your expertise on anything you can surmise. 13:1 comp., sunoco Blue fuel 112 octane, pretty even egt across using a Wilson moded Intake. Pulls to 7900. Thx

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1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.