BBC Big M Iron Block - 9.800/4.600

The BBC Big M Iron Block with a 9.800-inch deck and 4.600-inch bore is a bare engine block designed specifically for big-block Chevrolet performance and restoration applications. This product is ideal for serious engine builders who require a robust foundation for high-displacement powerplants.

Constructed from durable cast iron, this engine block ensures structural integrity and thermal stability, making it suitable for both street and racing applications. The 4-bolt main fastener pattern provides adequate clamping force for moderate to high-horsepower setups, while the 2-piece rear seal design allows for compatibility with various gasket materials.

Engine builders and restoration specialists will find the BBC Big M block to be an essential component for their big-block Chevrolet projects. Whether working on a classic Chevelle or a dedicated race engine, this block delivers the quality and dimensional accuracy necessary for reliable assembly.