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Best spark plug for 312?

Posted By 221239ford 11 Years Ago
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Best spark plug for 312?

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221239ford
Posted 11 Years Ago
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Hitting on all eight cylinders

Hitting on all eight cylinders (8 reputation)Hitting on all eight cylinders (8 reputation)Hitting on all eight cylinders (8 reputation)Hitting on all eight cylinders (8 reputation)Hitting on all eight cylinders (8 reputation)Hitting on all eight cylinders (8 reputation)Hitting on all eight cylinders (8 reputation)Hitting on all eight cylinders (8 reputation)Hitting on all eight cylinders (8 reputation)

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Last Active: 11 Years Ago
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I am running Autolite Platinum AP45 spark plugs and it is time to replace.  Any suggestions for a better plug?  My 312 is a '56 with '57 heads, stock teapot carb, mild Holman & Moody cam, pertronex ignition, and Fordomatic trans.  Also, what gap do you suggest?

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