We engineered the new Dart aluminum Honda block to solve the shortcomings of production blocks used in high-performance and competition applications. We offer the Dart block in B18 and B20 versions. Both are built to withstand the extreme cylinder pressures created by turbochargers and nitrous oxide injection. We increased wall thicknesses in all critical areas and beefed up the bottom end with steel main bearing caps. Best of all, Dart blocks are compatible with production Honda cylinder heads, internal components and accessories. We added the features that sport compact racers and performance enthusiasts need to build powerful and reliable engines.

Part Number	Main Bearing Dia.	Main Cap Material	Deck Height	Material	Cyl Bore Dia.	Price	In stock	Purchase
31496702	Standard	Steel	226 mm	Alum	81.5 mm	$2,269.00	Yes
31496802	Standard	Steel	226 mm	Alum	84.5 mm	$2,269.00	Yes