2500hp rated Dart LS Next2 Long Block


Price may vary. Please contact us to discuss your engine application and obtain a custom quote.

Please email moc.senigne-eca@selas to place an order for any FuelTech items.

+1 (424) 378-1219

We like to get to know our customers, their cars, what kind of engine/power they are looking for and what class they intend to race in. Please contact us prior to ordering, to dial in the spec to meet your requirements. No two engines are the same!

This is an example of the components and cost for a 2500hp engine based on a Hydraulic Roller Dart LS Next2 IRON Block. 

The Solid Roller version of this engine will be approximately an additional $1000 

For the Hydraulic Roller Aluminum version – add approximately an additional $3000

For the Solid  Roller Aluminum version – add approximately an additional $4000 




  • 2500hp rated Dart LS Next2 Iron Hydraulic Roller long block  — Learn more about the Dart LS Next Iron Block here.
    • OR Iron Solid Roller (Additional costs apply)
    • OR Aluminum Hydraulic Roller (Additional costs apply)
    • OR Aluminum Solid Roller (Additional costs apply)
  • Bore & stroke –TBD
  • Engine size – 364ci/388ci/400ci/427ci 
  • Piston Dome/Dish – TBD

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

  • Balancing
  • CNC Deck Block
  • Cylinders double torque plate CNC diamond honed for correct piston to wall clearance and surface finish.
  • Align Hone
  • CNC Machine Block for Receiver Grooves
  • CNC Machine Cylinder Heads for Top Fuel hoops
  • Full surface finish reports on deck and cylinder wall finish
    • According to fuel and power adder
  • Heads CC’d and valve job
  • Valve spring heights set up 
  • Pushrod length
  • Rocker geometry
  • Dyno Break-In
  • Dyno Test 
  • Engine fully blueprinted
  • Engine Build File & Dyno Data sheets provided

Short Block Components:

  • Dart LS Next2 Iron Block 4.000″ or 4.125″ bore, 9.240″ Deck height
    • 1/2″ Main Studs
    • 1/2″ Heads Studs
    • LS 2.560″ Mains
  • Callies Ultra Billet or Winberg Crankshaft
  • Clevite LS Next Rod Bearings
  • Clevite LS Next Coated Main Bearings
  • MGP Billet Aluminum Rods
  • Custom Ross Racing Pistons
  • Total Seal Piston Rings AP Steel Ring Pack 

Long Block Components:

  • CID Cylinder Heads
  • BAE One-Piece Stainless Steel O-rings
  • Clark Copper Cylinder Head Gaskets
  • Custom Camshaft
  • PAC Spring Kit w/ Ti retainers
  • Custom Manton push rods
  • Crower Shaft Rockers
  • Johnson Link Bar Lifters
  • ATI Super Damper w/ Fuel Pump Hub
  • Mighty Mouse Timing Pointer
  • RCD Gear Drive
  • ARP Hardware
  • Rear timing cover & gasket
  • Billet valley cover
  • ACE Racing Engines Billet valve covers (black or raw)

There is no fuel system included in this example. We offer external Wet Sump and Dry Sump systems from Williams, Barnes, Dailey & Peterson. Please contact us to discuss your build requirements for a personalized quote.

We recommend FuelTech EFI for this engine.  


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.