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LS NEXT Chevorlet LS Gen III Aluminum Block – 4.000 in. Bore, 9.240 in. Deck

Your Price: $7,467.49

SKU: 31947112

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Dart LS Next Aluminum Gen III Blocks (Skirted)

Designed from a clean slate approach the LS Next Aluminum block has addressed the shortcomings of the LS platform and is the ideal candidate for hot rodders, drag racers, circle track competitors, off-roaders, and high performance marine enthusiasts. 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 9.240in, 9.450in, 9.750in up to 9.800in; STD or raised .388in cam location; Cylinder barreLS2 extended .375in at the bottom; Extra thick decks ensure reliable head gasket seal; Blind head bolt holes available in 7/16in or 1/2in;Scalloped water jackets increase flow around cylinders for better cooling; Clearance for 4.100in stroke with steel rods; MUST BE clearanced for center counterweighted crankshafts; Splayed outer bolts on middle main bearing style motor mounts; Provisions for OE stock roller lifters and stock timing covers and stock rear cover; All OE bolt holes for starter, water pump, or passenger side starter mounts (Not available with skirted version);Parts kit included

GTIN: 00807051019575



Camshaft Location

Raised 0.388 IN

Cylinder Bore Diameter

4.000 IN

Deck Height

9.240 IN

Engine Block Weight

115 LBS

Freeze Plug Type


Camshaft Lifter Bore

0.824 IN

Main Bearing Type

Chevrolet LS


RMR Cast Aluminum Alloy

Rear Main Seal Type


Engine Type


Product Type

Engine Block