NRE Twin-Turbo Alien LS 427 – Warrior Series

Rated Output: 2,000 HP @ 7,000 RPM

The NRE Twin-Turbo Alien LS 427 (Warrior Series) is a competition-grade LS platform developed from years of high-horsepower racing experience. Producing 2,000 horsepower, this engine is engineered for extreme boost pressure, sustained high RPM operation, and maximum durability at four-digit power levels.

Although fully capable of street operation, this configuration prioritizes track performance, with valvetrain longevity optimized for racing conditions rather than continuous daily use. Compared to the 1,800 HP Twin-Turbo Hot Rod Series, this engine delivers higher peak output with a more aggressive mechanical profile. It represents the highest dual-purpose LS package offered by NRE, intended for competition vehicles with occasional street driving.

Performance Overview

• Displacement: 427 cubic inches

• Peak Power: 2,000 HP @ 7,000 RPM

• Induction: Twin-Turbocharged

• Engine Series: Warrior Series

• Use Profile: Track-focused with limited street operation

• Build Philosophy: Maximum reliability at extreme power levels

Engine Build Specifications

Engine Block & Rotating Assembly

• Block: Dart LS Next Pro

  • Machined for 1/2″ head studs

  • Machined for flame hoops

• Crankshaft: Callies Magnum full counterweight, 4.0″ stroke

• Connecting Rods: Oliver Billet Max Rods

• Pistons: JE forged 2618 alloy, 10.1:1 compression

Valvetrain & Timing

• Camshaft: Custom NRE solid roller camshaft

• Lifters: Isky Red Zone bushed lifters

• Rocker System: T&D shaft-mount rocker system

• Pushrods: Manton Series 5, 3/8″

• Timing Chain: Cloyes Z-Chain

Cylinder Heads & Sealing

• Cylinder Heads: NRE AFR 260cc LS3

• Configuration: Six-bolt, fully CNC-ported

• Head Gaskets: Cometic MLX

Induction & Fuel System

• Intake Manifold: NRE Gen 3 Alien intake

  • Integrated fuel regulation

• Fuel Management: Holley Terminator Max

  • Laptop programmable

  • Complete wiring harness and sensors included

• Ignition: 60-tooth crank trigger

Turbo System & Exhaust

• Turbochargers:

  • NRE 76 mm Mirror Image Gen 3

  • Billet compressor wheels

• Wastegates: Precision 46 mm

• Exhaust Headers:

  • Stainless steel 304

  • Fully TIG-welded

Lubrication System

• Oil Pump: High-volume performance oil pump

• Oil Pan:

  • 7-quart road race pan with trap doors

  • Optimized for sustained lateral G-loads

Key Characteristics

• Engineered for extreme boost and RPM stability

• Competition-grade internal components throughout

• Designed for drag racing, roll racing, and high-power track builds

• Built by Nelson Racing Engines with hand-selected components

• Proven architecture for four-digit horsepower applications

Ideal Applications

• Drag and radial racing

• Roll racing platforms

• Time attack and extreme track builds

• Showcase competition vehicles

• High-power LS swap projects