DART LS NEXT CAST IRON ENGINE BLOCK - CLEVELAND MAINS - 9.450" DECK - 4.125" BORE - 31837221-WW2

DART LS NEXT² Cast Iron Blocks
The ultimate upgrade for adding strength in the Aluminum or Iron LS Next platform is the LS NEXT² upgrade. This offers larger Billet Steel main caps using Ford (2.750″) or LS (2.560″) mains, that feature 1/2” main studs giving superior clamping force for even higher power levels. Blocks come machined to accept fully counterweighted crankshafts.

FEATURES:

9.240”-9.450” deck height with standard cam.
9.240″, 9.450”– 9.800” deck height with .388” raised cam.
Available in Iron or Aluminum (skirted andnon-skirted) blocks with LS (2.560”) or Ford (2.750”) main sizes for improved crankshaft stability.
Larger 4 bolt Billet Steel main caps.
Clearanced for center counterweighted crankshafts.
Priority main oiling system with two lifter crossovers and restrictor provisions
Siamesed cylinder bores with extra thick walls
Cylinder barrels extended .375" at the bottom.
Extra thick decks ensure reliable head gasket seal.
Blind 1/2' head bolt holes.
Scalloped water jackets increase flow around cylinders for better cooling.
Clearance for 4.100" stroke w/ steel rods.
Clearanced for center counterweighted crankshafts.
1/2" main studs, with 4 splayed outer bolts on middle main bearing caps.
LS style motor mounts.
Provisions for OE stock roller lifter 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