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Originally Posted by RodCar
Does anybody knows if some of the new sparkplugs of iridium or silver or others will work better in a 305 V8 Caprice?
Also I was wondering if somebody knows the stock or suggested gap for sparkplugs for this car?
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Platinum plugs work well. I don't know about the others - seems like they'd cost more without delivering enough more to cover their cost. Stick with the platinums. Also, it depends on what year your car is. Cars with large cap distributors generally are .060" while small-cap cars are .035 etc.