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spark plug gap??? spark plug gap???
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Kirkham Motorsports

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Old 02-01-2005, 07:43 PM
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Default spark plug gap???
motorheads.....what should the spark gap be on a standard set of plugs for my motor...306 with hyper-pistons...standard compression...AFR 185 heads...burning 91-92 octane.
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Old 02-01-2005, 11:35 PM
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What ignition are you running (MSD, Jacobs,Mallory, etc)

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Old 02-02-2005, 06:30 AM
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What Rick said. I run a Jacobs Pro Street and my stock gap is .035. With the Jacobs, I have found that a .047/.049 works best. I think the MSDs are about the same but am not sure.

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Old 02-02-2005, 09:04 AM
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MSD states the following using their 6 series
Compression up to 10.5:1: - .050 to .060
10.5:1: to 13.0:1 - .040 to .050
Above 13.0:1: --.035 to .045
These are only their recommendations.
Hope this helps

Mark
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Old 02-02-2005, 04:22 PM
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I'm using the MSD 6...I'll go between .05-.06. Thanks for the help guys.
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