2000hp rated Dart LS Next IRON Long Block


Our 2000hp rated Dart LS Next SHP Long Block, for Forced Induction applications. 
All our engines are fully machined, balanced & blueprinted, and come with deck and cylinder surface finish reports and an engine spec log. 

Our long blocks come ‘broken-in’ on our dyno using our shop intake and exhaust.

We like to get to know our customers, their cars and what kind of engine/power they are looking for. Please contact us prior to ordering, to dial in the spec to meet your engine requirements.


Our 2000hp rated Dart LS Next Long Blocks are ideal for daily drivers and street or strip cars.

Set up includes, but not limited to the following precision machining/blueprinting:

  • Balancing
  • CNC Block Machining
  • Cylinders double torque plate diamond honed for correct piston to wall clearance and surface finish
  • Full surface finish report on deck, head and cylinder wall finish 
  • Engine fully blueprinted
  • Heads CC’d and valve job
  • Valve spring heights set up 
  • Pushrod length
  • Rocker geometry
  • Dyno Test
  • LAT 20W50SAE Break-in Oil
  • Dyno Data sheets

NB: This Long Block is spec’d for hydraulic roller set-ups, we can accommodate Solid Roller builds with additional machining fees. Please contact us for more information.

  • 2000hp rated Dart LS Next Iron short block
  • Bore & stroke –TBD
  • Engine size – 388ci/408ci/427ci 
  • Piston Dome/Dish – TBD

Short Block Components:
  • Dart LS Next Iron Block 4.125″ Bore
  • Callies Magnum CCW Crankshaft
  • Clevite H Series Main Bearings 
  • Clevite H Series Rod Bearings
  • Callies Ultra Enforcer I Beam 6.125″ rods
  • Custom Ross Racing Pistons
  • Total Seal Piston Rings AP Steel Ring Pack  – Optional upgrade to Total Seal Gas-ported Top Ring
    • NB – Gas Ported Piston Rings direct cylinder pressure to the back of the ring through machined horizontal slots placed around the ring. The pressure pushes against the inside of the ring forcing it outward into the cylinder wall to improve ring seal evenly around the cylinder.

Long Block Components:
  • Melling oil pump
  • ARP Pro head studs 1/2″
  • CID LS7 LS3 hybrid Cylinder Heads
  • SCE Vulcan Cut-Ring Head Gaskets
  • Custom camshaft
  • BTR Spring Kit with Titanium Retainers
  • ARP cam bolts
  • Manton push rods
  • ACE/ARP Pro Series Custom Rocker Arm Stud Kit
  • GM LS3 rocker arms with BTR trunnion upgrade and billet stands
  • Cloyes Hex-A-Just Z-Racing Timing Set
  • ATI Super Damper
  • Mighty Mouse Timing Pointer
  • Johnson ST2126lsr link bar lifters
  • Improved Racing Oil Pan Gasket
  • Moroso LS Next oil pan 
  • Dart Windage tray
  • Front & rear timing covers & gaskets 
  • Billet valley cover
  • ACE Racing Engines Billet valve covers (black w/ -12AN breathers) 

Click HERE to view the Aluminum block version!

We recommend FuelTech EFI management for this engine.

x58 reluctor wheel.

This 2000hp+ Dart LS Next based long block engine is based on a twin turbo or single turbo application tuned professionally. Short block and crate versions of this engine are also available. This quote is non-exhaustive, please contact us for a personalized quote for your desired power-adder.

Other LS Long Blocks, Short blocks and Complete Crate engines are also available. Go back to ALL Street & Racing Engines here.

We work closely with our suppliers to keep on top of, and be a part of new innovations in our industry. Click here for more information about Total Seal Gapless & Gas-ported Piston Rings.



ACE Racing Engines makes no guarantee regarding operation of the Goods in settings or in ways that may be illegal or highly regulated, including those regarding smog and emissions. Please refer to your State/Country guidelines.

The product images shown are for illustration purposes only and may not be an exact representation of the product.

Additional information

Weight 400 lbs
Dimensions 48 × 40 × 40 in

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