The Boss 5.0 block is a 4.6L deck height, 94mm cylinder bore cast iron block. Cast in Ford's Cleveland plant, it uses a proprietary iron mix to yield the strongest possible casting strength with least porosity and greatest consistency.
Siamese 94mm Bore
17mm main web minimal thickness
4 Bolt Main with interference fit nodular iron machined caps
Increased main web window size for less oil movement and greater power
Weighs approximately 165 lbs