2500hp rated Dart LS Next2 IRON HYDRAULIC Roller Long Block


Please call us to spec out an engine exactly to your specifications!

+1 (424) 378-1219

Our 2500hp rated Dart LS Next2 Iron Hydraulic Roller Long Blocks are ideal for daily drivers and street or strip cars.
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.

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
  • Machining for RCD Gear Drive
  • Dyno Test
  • Dyno Data sheets


  • 2500hp rated Dart LS Next2 Iron
  • Bore & stroke –TBD
  • Engine size – 388ci/408ci/427ci 
  • Piston Dish – TBD

Short Block Components:

  • Dart LS Next Iron 4.125″ bore
  • Upgrade to 1/2″ Main Studs
  • Upgrade to 1/2″ Head Studs
  • Callies Ultra Billet crankshaft
  • Clevite LS Next Rod Bearings w/ dowel
  • Clevite LS Next Coated Main Bearings
  • Callies Ultra Enforcer I Beam 6.125″ rods 
  • Ross Racing Pistons
  • Total Seal Piston Rings AP Steel Ring Pack

Long Block Components:

  • CID LS7 Cylinder Heads
  • Clarke Copper Cylinder Head Gaskets
  • Custom Camshaft
  • PAC Racing Springs
  • Custom Manton push rods
  • Johnson Link Bar Lifters 2126LSR 
  • ATI Super Damper
  • Mighty Mouse Timing Pointer
  • ACE Custom shaft mount LS7 Rockers
  • RCD Billet Gear Drive
  • Dailey Engineering dry sump system
  • Rear timing cover & gasket
  • Billet valley cover
  • ACE Racing Engines Billet valve covers (black w/ -12AN breathers) 

x58 reluctor wheel.

This 2500hp+ turbo LS iron long block is based on a twin or single turbo application tune professionally. We recommend FuelTech EFI for this engine.  

This quote is non-exhaustive, please contact us for a personalized quote for your desired power-adder.



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.