BBC Big M Iron Block - 10.200/4.500

The DART BBC Big M Iron Block with a 10.200-inch deck and 4.500-inch bore is designed for serious big-block Chevy engine builders who demand maximum displacement and structural integrity for high-performance applications. This block is ideal for constructing street engines, racing powerplants, or marine propulsion systems.

Crafted from premium ductile iron, the DART BBC Big M block offers superior strength and rigidity compared to original equipment alternatives. It features reinforced main bearing saddles and cylinder walls that are engineered to withstand high boost and nitrous oxide applications, making it a reliable choice for demanding environments.

Engine builders, vintage race teams, and hot rod fabricators trust DART blocks for their dimensional accuracy and consistent machining tolerances. The 10.200-inch deck height accommodates modern stroker crankshafts while the 4.500-inch bore diameter provides flexibility for both naturally aspirated and turbocharged configurations.