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Dart LS Next Engine Blocks


Dart
Dart LS Next Engine Blocks

Dart Unleashes the Full Potential of the LS Engine Platform With the LS Next Engine Block!

The LS Next block is the first significant change in the bottom end architecture of the LS engine platform. By eliminating the ''Y-block'' design and utilizing conventional style main caps and oil pans, (stock pans can be used with Moroso oil pan spacers) Dart has addressed the problems resulting from the LS engine's separated crankcase bays. Windage is greatly reduced, resulting in increased power and improved lubrication.

This design change led to several additional improvements. The main webs are significantly stronger because the bay to bay breathing windows are eliminated in Dart's design. Deleting the windows also allows the cylinder barrels to be extended by .3750'' into the crank case, providing greater piston support at the bottom of the stroke. Two standard bore sizes are available, 4.000'' and 4.125''. Maximum bore of 4.220'' for iron and 4.165'' for aluminim, or optional Darton M.I.D. sleeve kit allowing up to 4.220'' bore.

All stock and aftermarket LS components can be utilized. Conventional style 4-bolt steel main caps are used. A 5/8'' thick full deck design is utilized for superior strength, with six head bolts per cylinder to provide secure clamping. Dart's priority main oiling system ensures high rpm reliability and includes provision for oil restrictors in the lifter valley.

Features:
  • Dart's LS Next block is cast in the USA with premium cast iron alloy or aluminum
  • Conventional style 4-bolt steel main caps with 7/16'' bolts are used
  • Full main webbing for maximum bottom end strength
  • Cylinder barrels are extended by .3750'' at the bottom, providing greater piston support for all combinations
  • 9.240'' deck height, with options of 9.450'' are available which allows for a possible effective barrel length of 9.825'' deck block
  • Extra thick Siamese cylinder bores allow for larger displacement capacity and a max bore size of at least 4.220''
  • A 5/8'' thick full deck design with a 9.240'' deck height
  • Six head bolts per cylinder provide secure clamping for power adder applications
  • Head bolts are upgraded to 7/16" for increased strength
  • Blind head bolt holes don't go through into the water jacket
  • Provision for oil restrictors in the lifter valley
  • Revised low restriction priority main oiling system
  • Pro-Stock / Pro-Mod big block style stepped main oil galley
  • An external oil filter must be used with stock or aftermarket oil pumps
  • Dual starter mounts
  • The water jacket on the #1 cylinder has been expanded for additional cooling capacity
  • LSX style lifter bosses and dog bone provision are provided
  • 100% Made in the USA!


  • 26 Products
    Iron Blocks

    301-31837111
    LS Next Engine Block
  • Cast Iron
  • 4.000" Bore
  • 9.240" Deck
  • Standard Cam Location
  • 4-Bolt Steel Main Caps
  • $119
    $2,560.37
    Order Today Ships 05/26/15

    301-31837211
    LS Next Engine Block
  • Cast Iron
  • 4.125" Bore
  • 9.240" Deck
  • Standard Cam Location
  • 4-Bolt Steel Main Caps
  • $119
    $2,560.37
    Order Today Ships 05/26/15

    301-31837221
    LS Next Engine Block
  • Cast Iron
  • 4.125" Bore
  • 9.450" Deck
  • Standard Cam Location
  • 4-Bolt Steel Main Caps
  • $2,564.99
    Order Today Ships 06/01/15
    Aluminum Blocks

    301-31937111
    LS Next Engine Block
  • Aluminum
  • 4.000" Bore
  • 9.240" Deck
  • Standard Cam Location
  • 4-Bolt Steel Main Caps
  • $99
    $5,868.99
    Order Today Ships 06/01/15

    301-31937112
    LS Next Engine Block
  • Aluminum
  • 4.000" Bore
  • 9.240" Deck
  • Raised Cam Location
  • 4-Bolt Steel Main Caps
  • $99
    $5,868.99
    Order Today Ships 06/01/15

    301-31937142
    LS Next Engine Block
  • Aluminum
  • 4.000" Bore
  • 9.750" Deck
  • Raised Cam Location
  • 4-Bolt Steel Main Caps
  • $99
    $5,868.99
    Order Today Ships 06/01/15

    301-31937211
    LS Next Engine Block
  • Aluminum
  • 4.125" Bore
  • 9.240" Deck
  • Standard Cam Location
  • 4-Bolt Steel Main Caps
  • $99
    $5,868.99
    Order Today Ships 06/01/15

    301-31937212
    LS Next Engine Block
  • Aluminum
  • 4.125" Bore
  • 9.240" Deck
  • Raised Cam Location
  • 4-Bolt Steel Main Caps
  • $99
    $5,868.99
    Order Today Ships 06/01/15

    301-31937242
    LS Next Engine Block
  • Aluminum
  • 4.125" Bore
  • 9.750" Deck
  • Raised Cam Location
  • 4-Bolt Steel Main Caps
  • $99
    $5,868.99
    Order Today Ships 06/01/15
    LS Next Block Accessories
      301-32000016
    LS Next Iron Engine Block Parts Kit
    $117.05
    Order Today Ships 05/26/15
      301-32000017
    LS Next Aluminum Engine Block Parts Kit
    $150.99
    Order Today Ships 06/01/15
      301-32210101-5
    LS Next Engine Block Cam Bearings
    $102.42
    Order Today Ships 05/26/15
      301-32226000
    LS Next Engine Block Cam Plate
    $15.66
    Order Today Ships 05/26/15
      301-62230001
    LS Next Engine Block Oil Pan Adapter Kit
    $244.63
    Order Today Ships 05/26/15
      301-66120018
    LS Next Engine Block Iron Head Stud Kit
  • 15 Bolt
  • $406.99
    Order Today Ships 06/01/15
      301-66120018B
    LS Next Engine Block Iron Head Stud Kit
  • 23 Bolt
  • $583.99
    Order Today Ships 06/01/15
      301-66120028
    LS Next Engine Block Aluminum Head Stud Kit
  • 15 Bolt
  • $360.99
    Order Today Ships 06/01/15
      301-66120028B
    LS Next Engine Block Aluminum Head Stud Kit
  • 23 Bolt
  • $541.99
    Order Today Ships 06/01/15
      301-66130018
    LS Next Engine Block Iron Head 1/2'' Stud Kit
  • 15 Bolt
  • $434.99
    Order Today Ships 06/01/15
      301-66130018B
    LS Next Engine Block Iron Head 1/2'' Stud Kit
  • 23 Bolt
  • $640.99
    Order Today Ships 06/01/15
      301-66130128
    LS Next Engine Block Aluminum Head 1/2'' Stud Kit
  • 15 Bolt
  • $382.99
    Order Today Ships 06/01/15
      301-66130128B
    LS Next Engine Block Aluminum Head 1/2'' Stud Kit
  • 23 Bolt
  • $555.99
    Order Today Ships 06/01/15
      301-66220010
    LS Next Engine Block Iron Head Bolt Kit
  • 10 Bolt
  • $95.10
    Order Today Ships 05/26/15
      301-9-MS2321H
    LS Next Engine Block Main Bearings
    $197.99
    Order Today Ships 06/01/15
      301-9-MS2321HX
    LS Next Engine Block Main Bearings
  • Extra Clearance
  • $206.99
    Order Today Ships 06/01/15
      301-MIDKITLSNEXT
    LS Next Engine Block Mid Kit Upgrade
    $2,489.99
    Order Today Ships 06/01/15

    26 Products