ACE Racing Engines 1000hp LS LONG Block

1000hp rated Dart LS Next SHP Long Block


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

+1 (424) 378-1219

Our 1000hp 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 1000hp rated Dart LS Next SHP 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


  • 1000hp rated Dart LS Next SHP long block
  • Bore & stroke –TBD
  • Engine size – 388ci/408ci/427ci 
  • Piston Dish – TBD

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.

Short Block Components:

  • Dart LS Next Iron SHP Block (Skirted) 4.125″ Bore
  • Dart Windage tray
  • Callies Compstar 3.622″ or 4.000″ Crankshaft 58x
  • Clevite H Series Main Bearings 
  • Clevite H Series Rod Bearings
  • Callies Compstar 6.125 Rods
  • CP Bullet Series 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 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
  • ACE/ARP Pro Series Custom Rocker Arm Stud Kit
  • 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
  • Moroso LS Next Oil Pan
  • GM Front & rear timing covers & gaskets 
  • Billet valley cover 
  • ACE Racing Engines Billet valve covers (black w/ -12AN breathers)


Single or Twin Turbo. x58 reluctor wheel.

This 1000hp+ turbo LS Next long block is based on a twin or single turbo application professionally tuned. We recommend FuelTech for this engine.

We also offer a 1000hp+ rated engine as a short block or as a complete Crate engine. See all Long Blocks here, or 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.