ACE Racing Engines 1000hp LS LONG Block

1000hp rated 388ci or 427ci Dart LS Next SHP Long Block


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

+1 (424) 378-1219

Our all new 1000hp rated Dart LS SHP Iron Long Blocks are fully CNC Machined, blueprinted and Dyno tested. Each engine comes with an Engine Specifications File and Dyno readings for your records. 

Our Long Blocks are complete from oil pan to valve covers, unless otherwise specified. 

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
  • Dyno Data sheets


  • 1000hp rated Dart LS Next SHP long block
  • Bore & stroke –TBD
  • Engine size – 388ci/427ci 
  • Piston Dish – TBD

Short Block Components:

  • Dart LS Next Iron SHP Block (Skirted) 4.125″ Bore
  • Callies Compstar 3.622″ or 4.000″ Crankshaft 58x
  • Clevite H Series Main Bearings 
  • Clevite H Series Rod Bearings
  • Dart Cam Bearings
  • Callies Compstar 6.125″ Rods
  • CP Bullet Series Pistons

Long Block Components:

  • Melling oil pump
  • ARP Pro head studs 7/16
  • Trickflow/TEA 245cc Cathedral Port CNC 6 bolt heads
  • SCE MLS Spartan Cylinder Head Gaskets
  • Custom Camshaft
  • BTR Spring Kit with Titanium Retainers
  • ARP cam bolts
  • Manton push rods 
  • GM LS1/2 rockers
  • BTR shaft mount rocker kit 
  • Cloyes Hex-A-Just Z-Racing Timing Sets
  • Johnson Short travel link bar lifters
  • ATI Super Damper
  • Mighty Mouse Timing Pointer
  • Improved Racing Oil Pan Gasket
  • Williams Manufacturing Oil Pan & Pick-up Pipe
  • Oil filter
  • GM Front & rear timing covers & gaskets 
  • Billet valley cover & Gasket
  • ACE Racing Engines Billet valve covers (black w/ -12AN breathers)
  • Driven GP-1 Break-in Oil 


We recommend FuelTech for this engine.

We also offer a 1000hp+ rated engine as a short block or as a complete Crate 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. 

 – Due to the custom nature of our builds, the product images shown here are for illustration purposes only and may not be an exact representation of the product.