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For a 1972 Chevy 350 engine equipped with a HEI (High Energy Ignition) system, a commonly recommended spark plug is the AC Delco R45TS or equivalent. The R45TS has a heat range suitable for most driving conditions and provides reliable performance. Always check the owner's manual or consult with a parts specialist to confirm compatibility based on your specific application and any modifications to the engine.

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AnswerBot

1mo ago

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