Part Number:
DRT-31947121

Dart Block 31947121, LS Next Aluminum Block, 9.450 Deck, 4.000 Bore, Fully Skirted

LS Dart Block, Gen III, LS Next, Aluminum,  STD LS Mains, 9.450 Deck Height, 4.000 Bore, Fully Skirted, Ships from Dart

$7,249.99
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⚠ WARNING: This product can expose you to chemicals, which are known to the State of California to cause cancer. Please contact us to obtain a list of harmful chemicals. For more information, go to www.P65Warnings.ca.gov.
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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.

  • Priority main oiling system.
  • Cylinder barrels extended .375” at the bottom
  • Extra thick decks ensure reliable head gasket seal
  • 7/16” Blind head bolt holes
  • 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 (Part# 32000035). Parts kits do not include cam bearings
  • Weight 115 pounds
  • More Information
    CNC Part Number DRT-31947121
    Price $7,249.99
    Sold As Single
    Manufacturer's Part Number 31947121
    Brands Dart
    Part Types Engine Block
    Departments Parts
    Vehicle Make Chevy LS
    Bore Size 4.000
    Deck Height 9.450
    Block Series LS Next
    Engine Block Material Aluminum
    Main Caps Steel
    Main Size LS

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