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*Engine Shown With Optional Upgrades

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Supercharged 427CI 820HP Airboat Engine

Original price was: $37,995.00.Current price is: $37,245.00.

Fully dressed Whipple supercharged 427CI 820+HP LSA style crate engine. We will custom paint the engine block, oil pan, timing cover, and valley pan to the color of your choice at no additional cost. We also include a Performance alternator serpentine pulley system to make this a fully dressed drop-in ready unit.

Engine Build Specifications:

  • LS 427CI 820HP Supercharged Airboat Engine Manufactured In Melbourne, FL:
  • Fully Machined Aftermarket Aluminum Race Block (Dart)
  • 4340 forged steel 4.00” stroke crankshaft (Eagle, or Scat)
  • Forged Connecting Rods 6.125” (Eagle, Scat, or LPC)
  • Performance Forged Pistons (Mahle, Icon, DSS, or JE)
  • Complete Assembly Internally Balanced
  • Custom Ground Hydraulic Roller Camshaft
  • Hydraulic Roller lifters
  • Timing chain set
  • Melling Oil pump
  • LS3/L92 Rectangle Port Aluminum Performance Cylinder Heads
  • 2.165 Pro Series Intake Valves
  • 1.590 Pro Series Exhaust Valves
  • 1.295” Dual Performance Valve Springs
  • 7 Degree Valve Retainers And Locks
  • Roller Rocker Arms
  • Chrome Moly Pushrods
  • Main bolts (Dart)
  • Head studs (ARP/Dart)
  • Aluminum Timing And Rear Cover
  • Aluminum Valley Tray
  • Stroker Oil Pan
  • Aluminum Valve Covers W/AN Fittings
  • SFI Harmonic Balancer
  • Water Pump
  • Whipple Supercharger
  • DBW Throttle body
  • Oil And Filter
  • LS3 STyle Coil Packs
  • Calibrated ECU (Holley Terminator X Max)
  • Main ECM Engine Wiring Harness
  • DBW Harness
  • Coil Pack Harness
  • Fuel Injector Harness
  • 8MM Plug Wires
  • Wide Ban O2 Sensor
  • Intake Air Temperature Sensor
  • Crankshaft Position Sensor
  • Camshaft Position Sensor
  • Engine Coolant Temperature Sensor
  • Manifold Air Pressure Sensor
  • Spark plugs
  • Fuel Injectors
  • Engines are photo documented during the building process
  • 1 Year 200 hour marine/airboat warranty

Additional Items Included:

  • Supercharger Performance Pulley Kit
  • Black anodized finish pulleys and brackets
  • 165 Amp black alternator
  • Belt and hardware
  • K&N Universal Performance Air Filter
  • Universal Bypass Regulator
  • Rear Fuel Hose
  • Fuel Pressure Sending Unit
  • Oil Pressure Send Unit
  • Mic Wire Extensions
  • Starter
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