Thread: NGK spark plugs..
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Old 01-03-2008, 09:45 PM
mudjnky mudjnky is offline
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Default Re: NGK spark plugs..
I need to replace the plugs in my Wifes car and after reading this I'll give the NGK's a try. Does anyone know which plug would go in a GM crate engine 454/420HP, iron head? I'm pretty sure that wouldn't be in the NGK catalog.
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