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5.0L CAST IRON MODULAR BOSS ENGINE BLOCK

    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. 
  • Siamese 94mm bore
  • 17mm main web minimal thickness
  • 4 Bolt main with interference fit nodular iron machined caps
  • Increased main web window size for improved crankcase breathing 
  • Head gaskets for 3V applications use M-6067-3V50 for all others contact Cometic® Gasket
  • For installation in 2005-2010 Mustangs use engine mount adapter M-6031-BOSS50
  • Weighs approximately 165 lbs
Part Type
Engine: Engine Blocks
Warranty Availability
Not Available
Packaged Dimensions
19" x 14.5" x 21
Packaged Weight
180 lb(s)
UPC Code
756122097786
Catalog Page Number
147
Country of Origin
United States