Engine Block

Modular Boss Engine Block; Boss 5.0L Block Is a 4.6L Deck Height; 94mm Cylinder Bore; Cast Iron; 4 Bolt Main;

• Siamese 94mm Bore
• 17mm Main Web Minimal Thickness
• 4 Bolt Main w/Interference Fit Nodular Iron Machined Caps
• Increased Main Web Window Size For Improved Crankcase Breathing
• Head Gaskets for 3V Apps M-6067-3V50
• For Install In 05-10 Mustangs Use Mount Adapter M-6031-BOSS50

The 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 is driven on public roads and highways. Installation of this art on a vehicle driven on public roads and highways is likely to violate U.S. and Canadian laws and regulations relating to motor vehicle emissions.

Winning race cars and performance parts, from the company that brought you Blue Bloods like the BOSS 302 and Cobra Jet Mustangs. With a heritage of champions, we stand alone, offering all the race-proven parts to build your own. Our parts carry the Ford Racing pedigree. You can use them with confidence to build your own blue-blood Ford performance car. Ford racing products are designed, engineered and developed to rigorous Ford standards. From race cars to ring gears, Ford Racing delivers proven performers for performance enthusiasts.