Dart LS Next Iron Engine Block with Siamese Cylinder Bores

The LS Next Iron block addresses factory LS platform shortcomings for high-performance applications. It features cylinder barrels extended by 0.375 inches at the bottom to improve piston support. Siamese cylinder bores with extra-thick walls provide superior strength for high-boost or large-displacement builds. By utilizing conventional style main caps and oil pans, this block eliminates the windage and oil control issues found in standard LS crankcases. This design is compatible with LS rotating assemblies and related high-performance components. It serves as an ideal foundation for drag racing, off-road, or marine engine configurations.

Material	Cast Iron
Model Number	31867211
Cylinder Bore Style	Siamese
Barrel Extension	0.375 inch
Main Cap Style	Conventional
Exterior Finish	Machined
Compatible Components	LS Rotating Assemblies
Block Type	Long Block
Item Weight	212 lbs
Product Dimensions	22 x 19.5 x 14.5 inches