Butler Performance Inc. - Ignition/Electrical
butler only uses high quality ignition and electrical components on their engines and you should too. With brands like MSD, FAST, Comp Cams, Accel, NGK, RPG, and more that you can trust from your Pontiac performance specialists.
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Here is an example if you have a question about the heat range on an NGK spark plug.
The lower the #, the hotter the plug is.
(Example- -6 is a hotter plug than -9)
Spark plug gap...More Details »
