Dart offers the Honda block in two versions that replace B18 and B20 castings. Both are built to withstand the extreme cylinder pressures created by turbochargers and nitrous oxide injection.

FEATURES:
• NEW machined for aluminum connecting rod clearance on all blocks.
• NEW oil gallery hole moved to accomidate connecting rod clearance.
• NEW all honda blocks are run thru Dart machinery’s hip process (hot isostatic pressing) to increase strength and greater reliability.
• NEW steel billet main caps with arp main studs increase bottom end strength and minimize bearing bore distortion.
• NEW increase deck surface to increase rigidity and improve head gasket life.
• Dart B-18 cast aluminum block has stock deck height and choice of 81.5mm or 84.5mm cylinder bores
• Dart B-20 cast aluminum block has stock deck height and choice of 81.5mm or 84.5mm cylinder bores
• Replaceable ductile iron dry sleeves are fully supported to reduce cylinder bore distrotion and enhance ring seal
• Closed deck design increases rigidity and improves head gasket sealing
• Extra large water jackets enhance coolant circulation around cylinder barrels
• Machined for piston oil sprayers (not included) to reduce piston temperatures and prevent detonation