Spark Plugs for 454 - The Supercar Registry

09-18-2018, 07:43 PM

70Malibu

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Spark Plugs for 454

I am newer to muscle cars and recently purchased a 70 Chevelle with a mild build 454. I noticed that stock Delco plugs were installed on the engine. Are these the best plugs available from a performance perspective for this engine? Has anybody tried a variety plugs for a big block Chevy and found one they like best?
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