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What are best plugs, stock 305
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11-05-2009, 02:10 AM
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pcwillsie
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Join Date: Mar 2007
Location: oklahoma
Posts: 118
Re: What are best plugs, stock 305
the original plugs for small block trucks of this era are r43ts. The ac delco r45ts are a little hotter and help with the fouling probs in older engines.
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