Dart B18 block has stock deck height, std 81.5mm bore, optional 84.5mm bore (accepts 95mm stroke)
Dart B20+ Block has extra tall 8.900" (226mm) deck height, 84.5mm bore for increased displacement.
Manufactured from aerospace quality C355-T6 virgin aluminum alloy for maximum strength, durability.
Replaceable ductile iron dry sleeves are fully supported to reduce bore distortion and enhance ring seal.
Closed deck design increases bottom end strength and minimize bearing bore distortion.
Extra large water jackets increase coolant circulation around cylinders.
Standard pistons oil sprayers reduce piston temperatures to extend life and prevent detonation.
Dart Blocks use stock components including oil pan, oil pump, water pump, alternator and timing belt tensioner.
86mm maximum bore, 95mm maximum stroke.
