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Old 02-08-2012, 10:58 PM   #11
flatjack9
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Join Date: May 2010
Location: Oshkosh, Wi
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Default Re: ID numbers on a flathead block ?

A heads were not standard on the 59AB. If a pencil will sit on the ledge at the front of the block above the timing cover, it is pre 59AB. If not, it is 59AB.
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