Ford Racing 5.0L Cast Iron Modular BOSS Cylinder BlockThe Boss 5. 0 block is a 4. 6L deck height, 94mm cylinder bore cast iron block. The block uses a proprietary iron mix to yield the strongest possible casting strength with the least porosity and greatest consistency. NOTE: The Boss 5. 0L modular block does not have a finish milled head deck surface and the cylinder bores are rough honed. WARNING: This part is designed and intended for competition use only. It should not be installed on a vehicle that
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Ford Racing 5.0L Cast Iron Modular BOSS Cylinder Block