Spark Plug Gap Settings

[MStout]

What is the best possible gap to set a spark plug at? Is there different ones for better gas mileage opposed to more HP?

[pegasus757]

Large gap, small gap..... super excel coil or standard coil...its like standing in a swimming pool of gasoline...one match or a blow torch...the result will be the same......the theroy behind a large gap was or still is , cars run leaner, increase the gap to get more gas particals between the gap. .035 will do well,but the life of the plug will be shorter, no diff in HP

[MStout]

Yeah, if I buy Iridiums I dont want them to shit out right away.

[NeonStyl]

Well, I have had troubles with the platinum and other "fancy" spark plugs out there, so I have never tried the Iridium ones. However, I have always used the factory setting of 0.35 (for a first-gen) on the OEM Champion's (P/N #RC9YC).

L8R,