Spark Plugs - Chevrolet Chevelle Forums

04-16-2010, 10:38 AM

Hank70SS

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Join Date: Dec 2009

Location: Brighton, MI

Posts: 4,719

Robert, like you said we don't know what's been done to the engine. We also don't know what plugs he's running now, that's why I asked. Going with the 43's is probably a safe bet but he may actually be changing heat ranges if he does. We don't know because we don't know what's in there now.

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Hank

70 Chevelle SS396(454), M20, 3.73
My Chevelle

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