2000hp+ 427ci Dart LS Next


2000hp 427ci Dart LS Next
COMPLETE LONG BLOCK with oil pump, oil pan, damper, flex plate, front and rear covers, valley cover and valve covers.
Callies Magnum CCW crankshaft, Callies Ultra I beam rods and Frankenstein or TrickFlow CNC rectangle port heads. ALL NEW parts. 
Twin Turbo or Single Turbo.
x58 reluctor wheel.


2000hp+ LS Engine for Forced Induction applications (427ci)
  • 2000hp+ rated LS Engine
  • Bore & stroke – 4.125” x 4.0”
  • Engine size – 427ci
  • Deck height – TBD
  • Chamber CC’s – TBD
  • Piston Dish – TBD
  • Static compression ratio  – TBD
  • Head gasket compressed thickness – TBD
  • Valve spring open pressure TBD
  • Seat pressure – TBD
  • Duration – TBD / TBDTB @ .050”
  • Cam Timing – TBD Lobe seperation /TBD Intake centreline
  • Lift – Intake TBD/ Exhaust TBD
  • Hydraulic Roller cam for turbo or supercharger


  • Dart LS Next 4.125 tall deck block PN 31837221 
  • Dart LS Next Cam retaining plate & bolts
  • LS Next Block parts, cam bearings, dowels, freeze plugs
  • Dart LS Next windage tray & retaining plate & bolts
  • Clevite Daido coated main bearings 
  • Clevite Daido rod bearings
  • Dart LS Next ARP Pro Main studs 
  • Callies Magnum 8-CCW 4.00” crankshaft (Ultra Billet & Magnum XL also available)
  • Callies Ultra I beam 6.125” rods with ARP bolts
  • TCI Flex plate 
  • ARP Flex plate bolts 
  • Inovators West harmonic balancer 
  • ARP Damper bolt 
  • Diamond pistons -24cc dish 
  • Melling 10296 HV/HP oil pump (Dry Sump also available)
  • Moroso LS Next oil pan (GM A Body & others available)
  • Stef’s Oil filter adapter plate for Moroso pan
  • ICT Billet oil feed 
Top End Spec:
  • Cloyes IWIS ‘Z’ chain double roller billet timing set 
  • Morel Hydraulic LS lifters & tie bars (Solid also available)
  • Dart LS Next ARP Pro head studs (23 studs)
  • MLX head gaskets (others available) 
  • TrickFlow Specialties CNC ported 255 LS3 style heads
  • Custom head work carried out by Total Engine Airflow 
  • Powered metal valve guides
  • CNC combustion chambers
  • Stainless intake Valves
  • Inconel exhaust valves 
  • 6 bolt design
  • Custom Twin Turbo Cam (Hydraulic or Solid)
  • PAC Racing Valve Springs
  • Titanium Retainers
  • ARP Cam bolts 
  • ARP Rocker bolts  
  • Crower Pro series stainless steel adjustable roller rockers
  • C.H.E Bronze bearing trunnion kit 
  • Gasket kit 
  • Oil Filter
  • Front & Rear covers 
  • Billet Valley Cover (ACE or ICT) 
  • Valve covers (ACE, ICT or Holley) 
  • Dipstick and tube
  • Windage Tray 
  • Oil filler cap 
  • AN-3 Steam vent kit 
  • 12 point Hardware 

Options: DART LS Next II upgrade with Cleveland mains & 1/2 studs (3500hp capable), ultra billet crank, billet heads, roller bearing cam tunnel and more…
We recommend Holley or FuelTech EFI for this engine.
This 2000hp LS Next based engine is based on a twin turbo or single turbo application with a good tune. Engines must be tuned professionally.
Ideal for extreme street cars and race cars. 
Other options also available.
Please contact us before ordering this engine to discuss your exact requirements.