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Old 02-09-2018, 06:22 PM   #1
qflash
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Default spark plug gap

Recommended plug gap for MSD 7-AL3 with Autolite racing plugs in 307 Olds stocker.
Thanks,
Ron
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Old 02-10-2018, 01:43 AM   #2
GTX JOHN
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Default Re: spark plug gap

We run .035. on AR plugs
More does not seen to help and just puts
more strain on the the rest of ignition system in
my opinion.
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Last edited by GTX JOHN; 02-10-2018 at 01:50 AM.
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Old 02-10-2018, 12:22 PM   #3
FireSale
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Default Re: spark plug gap

I have that box on a 302 Ford. At .050 it was hard to start. Improved a lot at .035. Autolite plugs, too.
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Old 02-11-2018, 01:02 AM   #4
Dave Noll
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Default Re: spark plug gap

.015" difference in spark gap makes a negligible difference in spark output as observed on an Oscilloscope.
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