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what are the best spark plugs and wries for a 95 boneville

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Old 01-21-2005, 11:47 PM
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How does the one heat range colder impact the engine and performance? I have always wondered this.

For a non modded engine is going 1 heat range colder make a difference? advantages/disadvantages?
Old 01-22-2005, 12:44 AM
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We have a Techinfo article on this subject

On a non-modded engine, there will be no harm. The plugs MIGHT foul out sooner, but probably not by much. The NGK V-Powers aren't made in the stock heatrange for our cars, so most (especially those boosted) go with the 55'*.
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