NRE Inter-Cooled LS Whipple 2.9L / 3.0L 427

The NRE Inter-Cooled LS Whipple 427 is a high-output, supercharged LS engine designed to deliver immediate torque with exceptional drivability. Producing 1,000 horsepower and a broad torque curve, this package delivers strong response from low RPM through the upper range, making it equally suitable for track use and extended street driving.

This engine is supplied as a complete turn-key assembly, dyno tested and calibrated, ready for installation. It is capable of sustained highway use while maintaining the strength required for repeated track sessions. The combination of a Whipple 2.9L or 3.0L supercharger with a reinforced Dart LS platform results in consistent power delivery and long-term reliability.

Performance Overview

• Displacement: 427 cubic inches

• Induction: Inter-cooled Whipple Supercharger (2.9L or 3.0L)

• Maximum Power: 1,000 HP @ 6,400 RPM

• Maximum Torque: 921 lb-ft @ 4,600 RPM

• Fuel System: Electronic fuel injection

• Configuration: Turn-key, dyno tuned

Engine Build Specifications

Engine Block & Rotating Assembly

• Block: Dart LS Next

  • 4.125″ bore

  • 9.240″ deck height

  • Steel splayed main caps

  • Six head bolts per cylinder

• Crankshaft: Dart billet, 4.0″ stroke

• Connecting Rods: Boostline 6.125″ 4340 forged I-beam

• Pistons: Custom JE forged 2618 alloy, 9.0:1 compression

• Piston Rings: JE ductile rings

Valvetrain & Timing

• Camshaft: Custom NRE hydraulic roller

• Lifters: GM Delphi LS7 lifters

• Rocker Arms: Bushed LS3

• Pushrods: Manton performance pushrods

• 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

Induction & Fuel System

• Intake Manifold: Whipple supercharger system

• Supercharger Options: 2.9L or 3.0L inter-cooled

• Fuel Injectors: Custom flow-matched 1,200 cc

• Fuel Management: Holley ECU

  • Laptop programmable

  • Complete wiring harness and sensors included

• Ignition System: 60-2 crank trigger

Lubrication & Engine Control

• Oil Pan: Holley 302-3

• Harmonic Damper: ATI

• Valve Covers: NRE billet, fully CNC-machined

• Fasteners: ARP throughout

Key Characteristics

• Immediate torque delivery across the RPM range

• Broad, linear power curve suitable for street and track use

• Inter-cooled supercharger system for stable intake temperatures

• Fully assembled, dyno verified, installation-ready package

• Built and tested by Nelson Racing Engines

Ideal Applications

• High-performance street builds

• Track day vehicles

• Muscle cars and modern performance platforms

• LS swap projects requiring strong low-RPM torque