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Old 11-29-2012, 11:50 AM   #15
Chris
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Join Date: May 2010
Location: Spokane, WA
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Default Re: What is the story with this flathead block? Raised intake area

I measured the bore this morning with a caliper and it's right at 3 3/16, so maybe someone bored it to 239? I'll get an inside micrometer and find out exactly what it is!
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