Not Ranked
Not sure what your questioning unless you don't understand how the flywheel hub at the crankshaft flange can become uncentered when the crankshaft is turned undersize. This in turn creates runout on the flywheel when installed on the crankshaft which may have been perfectly balanced on an arbor.
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Ted Eaton.
Fe's are fast but "Y-Blocks" are fun when they run in the 9.60's at 135 mph.
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