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0312phr Buick445 06 Z

The block has been bored .0380-inch for a total bore diameter of 4.350. The factory '72 nodular iron 455 crank has been ground to a 3.942-inch stroke before being Nitrided for surface hardness.
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The block has been bored .0380-inch for a total bore diameter of 4.350. The factory '72 nodular iron 455 crank has been ground to a 3.942-inch stroke before being Nitrided for surface hardness.  View Related Article