Features Dart priority main oiling system with provisions for stock oil filter mounting. By utilizing conventional style main caps and oil pans with LS rotating assemblies and related components, Dart has addressed the windage and oil control problems which result from the factory LS engine’s separated crankcase bays.

• Skirted and non-skirted design options available.

• Priority main oiling system.

• Available in deck heights from 9.240”, 9.450”, 9.750” up to 9.800”.

• STD or raised .388” cam location.

• Cylinder barrels extended .375” at the bottom.

• Extra thick decks ensure reliable head gasket seal.

• Blind head bolt holes available in 7/16″ or 1/2″.

• Scalloped water jackets increase flow around cylinders for better cooling.

• Clearance for 4.100” stroke with steel rods.

• MUST BE clearanced for center counterweighted crankshafts.

• Splayed outer bolts on middle main bearing caps.

• LS style motor mounts.

• Provisions for OE stock roller lifters and cam.

• Uses stock timing covers and stock rear cover.

• All OE bolt holes for starter, water pump, etc.

• Driver or passenger side starter mounts (Not available with skirted version).

• Parts kit included.