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DART MACHINERY

DART LS Next2 Gen III Iron Engine Block 31837121-WW2 - 9.450" Deck, 4.000" Bore

PART NUMBER:
31837121-WW2
MPN:
31837121-WW2
Availability:
Ships from manufacturer
Shipping:
Free Over $98 In U.S. 48
Type:
4.000 Bore Blocks
Material:
High Nickel 220 BHN Cast Iron
Deck Height (in.):
9.450
Bore (in.):
4.000
Main Bearing Size:
Standard
Main Cap Material:
Steel
Main Cap Type:
4-Bolt
Main Cap Size (in.):
2.750
Cam Location:
Stock
Lifter Bore Diameter (in.):
.842 (Stock)
Freeze Plugs:
Press Fit
Rear Seal:
Stock
Weight (lbs):
227
On Sale
  • DART LS Next2 Gen III Iron Engine Block 31837121-WW2 - 9.450" Deck, 4.000" Bore
  • DART LS Next2 Gen III Iron Engine Block 31837121-WW2 - 9.450" Deck, 4.000" Bore
  • DART LS Next2 Gen III Iron Engine Block 31837121-WW2 - 9.450" Deck, 4.000" Bore
Now: $5,177.49
Was: $5,449.99

Description

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
  • Parts kit included (Part#32000033). Parts kits do include cam bearings.

Note: Ocean Freight is available to Australia! Contact us for details. 

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Warranty Information

Dart Machinery, Ltd. warrants to the original purchaser its products to be free from defects in materials and workmanship under normal and recommended use and that the products will conform to Darts published specifications or, if applicable, Buyers specifications to the extent accepted by Dart in a separate writing. Darts obligation under this warranty shall be limited to repair or replacement, at Darts option, of any parts or products which may prove defective under normal use within six (6) months from the date of sale, and which the examination of Dart Machinery, Ltd. reveals to its satisfaction that the products in question are in fact defective. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES EXPRESSED OR IMPLIED INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR USE AND OF ALL OTHER OBLIGATIONS OR LIABILITIES ON THE PART OF DART MACHINERY, LTD. THE PURCHASER ACKNOWLEDGES THAT HE IS NOT RELYING ON DART MACHINERY, LTD.S SKILL OR JUDGMENT TO SELECT OR FURNISH GOODS SUITABLE FOR ANY PARTICULAR PURPOSE AND THAT THERE ARE NO WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION ON THE FACE HEREOF. THE WARRANTY CONTAINED HEREIN SHALL NOT APPLY TO ANY PART OR PRODUCT WHICH HAS BEEN SUBJECT TO ACCIDENT, NEGLIGENCE, ALTERATION, ABUSE, OR MISUSE. DART MACHINERY, LTD. MAKES NO WARRANTY WHATSOEVER IN RESPECT TO ACCESSORIES OR PARTS NOT SUPPLIED BY DART MACHINERY, LTD. THIS WARRANTY SHALL APPLY ONLY WITHIN THE BOUNDARIES OF THE CONTINENTAL UNITED STATES. Any affirmation of fact or promise made by Dart Machinery, Ltd. shall not be deemed to create an express warranty that the product shall conform to the affirmation or promise; any description of the product is for the sole purpose of identifying it and shall not be deemed to create an express warranty that the product shall conform to such description; any sample or model is for illustrative purposes only and shall not be deemed to create an express warranty that the product shall conform to the sample or model; and no affirmation or promise, or description, or sample or model shall be deemed part of the basis of the bargain.
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