Ford Performance 460 Big Bore Iron Block 4.490 Rough Bore M-6010-A460XBB

If you're building a competition 460 engine that demands maximum durability under extreme power levels, you need a block engineered specifically for that purpose. Ford Performance's Big Bore Iron Block delivers the structural integrity required for forced induction and high-RPM applications, with Siamese cylinder bores and robust main bearing support. This rough-bore platform gives you the flexibility to dial in your exact displacement while maintaining the precision tolerances necessary for professional racing.

The 4.490-inch rough bore and 10.322-inch deck height are precision-cast to exacting standards, allowing you to bore up to 4.625 inches or stroke the engine to 598 cubic inches depending on your build specifications. The nodular iron 4-bolt main caps on journals 2, 3, and 4 provide the clamping force needed for sustained high-horsepower loads, while the solid Siamese casting eliminates cylinder wall flex common in production blocks. Wet sump oiling with a 3.00-inch main journal diameter ensures consistent lubrication during peak performance.

Technical Specifications:

• Cast iron construction
• Siamese cylinder bores
• 4.490" rough bore
• ±0.003" bore tolerance
• 10.322" deck height
• 3.00" main journal
• 4-bolt main caps
• Nodular iron caps
• Up to 4.625" maximum bore
• Up to 598 cubic inches
• Wet sump oiling
• 275 lbs approximate weight
• Competition/off-highway use only