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I'd also like to know this. I'm thinking this engine will like just about any quality plug. If no one here has any answers just go on a s10 forun
 

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if no big mods. use delco's for "like factory performance"

not to change topic but when did you change them out. i know it says 100K but i think that's to long to with one kinda plug in i have 70K on my now
 
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