NRE Alien Fuel Injected 632 – Hot Rod Series | 820 HP EFI Big Block

The NRE Alien Fuel Injected 632 Hot Rod Series is built for drivers who want brutal big-block performance wrapped in the unmistakable Signature Alien Series look. Producing 820 horsepower at 6,200 RPM, this engine delivers lightning-fast throttle response and massive torque everywhere in the RPM range, while remaining street-capable and refined thanks to modern electronic fuel injection.

This combination captures the raw, nasty hot rod sound and feel enthusiasts crave, while integrating fully sequential, self-learning EFI technology that automatically adjusts for elevation and changing driving conditions. The result is a powerful, aggressive engine that starts easily, drives smoothly, and pulls hard in any environment.

A key highlight is the ultra-low-profile NRE Alien intake, measuring just 9 inches in total intake height, allowing this 632 to fit under most factory and custom hoods without the need for a tall cowl. This makes it an ideal choice for classic muscle cars, hot rods, restomods, and pro-touring builds where both performance and packaging matter.

Performance & Driving Character

The Alien Fuel Injected 632 is tuned to deliver immediate throttle response with relentless torque, making it feel alive the moment you touch the pedal. The custom NRE hydraulic roller camshaft produces an aggressive idle and strong mid-range power while keeping maintenance to a minimum. This engine is designed to be driven hard on the street, offering old-school attitude with new-school reliability and drivability.

Engine Block & Rotating Assembly

Block

• Dart big block Chevy

• 4.600″ bore

• Splayed main caps

• 2-piece rear main seal

Rotating Assembly

• Callies Magnum 4.75″ stroke, 4340 forged crankshaft

• Callies 4340 forged H-beam connecting rods, 6.7″

• JE forged pistons, 10:1 compression

• Plasma moly piston rings

This forged rotating assembly is engineered for strength, smooth operation, and long-term durability in high-torque street applications.

Valvetrain & Timing System

• Custom NRE hydraulic roller camshaft

• Hydraulic short-travel roller lifters

• T&D shaft rocker system

• Manton pushrods

• Cloyes timing chain

• Cast aluminum Milodon timing cover

The hydraulic roller valvetrain provides aggressive cam profiles with reduced wear and minimal maintenance.

Cylinder Heads, Induction & Fuel System

Cylinder Heads

• Brodix 380 CNC aluminum cylinder heads

• 2.350″ intake / 1.880″ exhaust Inconel valves

• PAC performance valve springs

Induction System

• NRE Alien intake manifold

• Internal twin throttle body

• Hidden injectors and sensors

• 9″ total intake height

Fuel Injection & Engine Management

• Flow-matched 60 lb/hr fuel injectors

• Holley fully sequential EFI system

• Integrated knock detection

• Complete wiring harness and sensors

This advanced EFI setup ensures crisp cold starts, precise fueling, and consistent performance across varying elevations and climates.

Oil System, Ignition & Hardware

• Moroso 8-quart oil pan

• High-volume oil pump and pickup

• ATI harmonic damper

• Crank trigger ignition system

• Cam position sensor

• Fel-Pro head gaskets

• ARP fasteners throughout

• NRE billet fully CNC-machined valve covers

Specifications

• Engine Type: Big Block Chevy

• Displacement: 632 cubic inches

• Horsepower: 820 hp @ 6,200 RPM

• Fuel System: Electronic fuel injection

• ECU: Holley fully sequential EFI

• Compression Ratio: 10:1

• Camshaft: Hydraulic roller

• Intake Height: 9 inches

• Fuel Requirement: 91-octane pump gas

• Application: Hot rod, muscle car, street performance, restomod

• Build Type: Hot Rod Series, turnkey configuration