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.035 or you can go .045 depends on the engine setup but .045 is a safe gap.

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โˆ™ 2012-11-29 07:18:46
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Winfield Gibbons

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โˆ™ 2020-10-30 04:29:37
Thanks that helped me out.
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Winfield Gibbons

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โˆ™ 2020-10-30 04:31:13

045

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Winfield Gibbons

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โˆ™ 2020-10-30 04:32:30

Don't know.

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Q: What is the proper spark plug gap for a Chevy 400 small block bored out to a 406?
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