550hp LS3 Turnkey crate engine


600hp 376ci LS3 Turnkey crate engine based on ALL NEW parts with Ross Racing Pistons, Callies H-beam connecting rods and TrickFlow LS3 CNC ported heads. 415ci also available

Complete turnkey engine with Holley Mid-mount front accessory drive kit, Holley sniper intake manifold and Holley Terminator X-max EFI. Comes with Hooker stainless headers (please specify vehicle)

Shipped in an enclosed crate with all parts needed for a plug and play fit into your vehicle.

Please call Stef at the shop (424-378-1219) to talk about your engine requirements and to dial in the spec before ordering.

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550hp LS3 Turnkey engine

Set up includes, but not limited to the following 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 balanced and blueprinted


  • Chevrolet Performance Gen IV 6.2L LS3 block 4.065″ bore
  • Clevite H Series main bearings
  • Clevite H Series rod bearings
  • Durabond coated cam one piece cam bearings
  • GM 3.622” crankshaft 58x (4.00 stroke available)
  • Callies Compstar 6.125” rods with ARP 2000 rod bolts
  • Flex Plate or Flywheel (please specify)
  • ARP Flex plate bolts
  • Ross Racing Pistons
  • Melling 10295 HV oil pump
  • Holley 302/3 oil pan (GM A body)
  • Cloyes timing set
  • GM Lifter trays
  • LS7 lifters
  • ARP head studs
  • GM MLS head gaskets
  • 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 Valves
  • 4 bolt design
  • GM Cam retaining plate
  • ARP Cam bolts
  • BTR Stage 3 LS3 cam
  • PAC 660” Platinum valve springs
  • Titanium retainers
  • BTR chromoly push rods
  • ARP Rocker bolts
  • GM LS3 1.7:1 Rockers
  • Billet LS3 Rocker stands
  • Rocker arm trunnion kit
  • Gasket kit
  • Oil Filter
  • Front & Rear timing covers
  • Core Plugs
  • Billet Oil Gallery dog bone
  • Holley Billet Valley Cover
  • AN-3 Steam vent kit
  • ACE Racing Billet Valve covers
Turnkey Items
  • Holley Single plain Intake w/ fuel rails
  • FIC fuel injectors 
  • Holley four barrel throttle body hardcore grey
  • Holley Mid mount front drive kit (select from drop down) 
  • Dipstick 
  • LS Ignition coils 
  • Holley Coil relocation brackets
  • MSD cut to length coil leads
  • Spark Plugs 
  • Holley Terminator X EFI (select from drop down)
  • Custom Powdercoating and Cerakote also available!

Additional information

Weight 400 lbs
Dimensions 48 × 40 × 40 in