NRE Inter-Cooled Whipple 3.0L 427 LS Crate Engine

1100 Horsepower @ 6400 RPM

The NRE Inter-Cooled Whipple 3.0L 427 LS is a purpose-built, forced-induction LS platform engineered for extreme power with real-world drivability. Producing 1100 horsepower at the same boost level as the 2.9L variant, this engine delivers instant torque, relentless acceleration, and stable performance across varying climates and elevations.

Designed for street or strip use, the engine supports air conditioning, requires no valve-train service, and features a self-learning ECU that automatically compensates for altitude and environmental conditions. The result is a high-output LS engine that can be driven nationwide with consistent behavior and reliability.

Performance Highlights

• Displacement: 427 cubic inches

• Peak Output: 1100 HP @ 6400 RPM

• Induction: Inter-cooled Whipple 3.0L Supercharger

• Throttle Control: 90 mm Drive-By-Wire

• Engine Management: Fast-learn ECU with adaptive tuning

• Street-Capable Configuration: Supports A/C operation

• Maintenance: Hydraulic roller valvetrain – no periodic adjustment

Engine Build Specifications

Short Block

• Block: Dart LS Next

• Crankshaft: Dart Billet 4.0″

• Connecting Rods: Boost-Line 4340 I-Beam

• Pistons: JE 2618 forged, 9.0:1 compression

• Piston Rings: Plasma Moly

• Fasteners: ARP

Valvetrain & Timing

• Camshaft: Custom NRE Hydraulic Roller

• Lifters: COMP Cams

• Pushrods: Manton Series 5

• Rocker Arms: Bushed LS3

• Timing Chain: Cloyes Z-Chain

• Timing Cover: GM

Cylinder Heads & Sealing

• Cylinder Heads: NRE AFR 260cc LS3

• Configuration: Six-bolt, fully CNC-ported

• Head Gaskets: Cometic MLX

• Valve Covers: Shaun’s Custom Billet Alloy

Induction & Fuel System

• Intake Manifold: Whipple 3.0 Supercharger

• Supercharger: Inter-cooled Whipple 3.0L

• Throttle Body: 90 mm Drive-By-Wire

• Fuel Management: Holley Terminator ECU

• Injectors: Custom flow-matched 1000 cc

• Wiring & Sensors: Complete harness included

Lubrication & Balance

• Oil Pan: Holley 302-3

• Harmonic Damper: ATI SFI-Certified

Applications

• High-performance street builds

• Drag racing

• Pro-touring vehicles

• Custom LS engine swaps

• Show and competition cars

Why Choose the NRE 3.0L 427 LS

• Proven four-digit horsepower output

• Engineered for consistent operation across elevations

• Premium internal components throughout

• Built by Nelson Racing Engines to exacting tolerances

• Balanced power delivery suitable for street and competition use