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What spark plugs are available for the LT1?

April 26, 2017lt1 plugs SPARK

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What spark plugs are available for the LT1?

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Here’s cross reference of the different plugs along with the part numbers: Stock heat range: AC Delco 41-906 (platinum, stock plug) AC Delco Rapidfire 3 AC Delco R44LTS Accel 516 Autolite 106 Bosch HR9DPX Champion RS14YC Motorcraft AGRF42 Nippondenso T16EPR-U NGK TR5 (.035 gap) NGK TR55 (.050 gap) NGK TR55VX (platinum version of the above) Colder range: AC Delco R42LTS Accel 514 Autolite 104 Bosch HR8DPX Champion RS9YC Motorcraft AGRF42 Nippondenso T20EPR-U NGK BPR6EFS