NRE Blown Injected Roots 572 “The Imposter” – Hot Rod Series | 1,150 HP EFI Big Block

The NRE Blown Injected Roots 572 – “The Imposter” was engineered to solve a long-standing problem in the hot rod world: fuel-injected, roots-blown engines that look incredible but are nearly impossible to live with on the street. This engine is the answer. Producing 1,150 horsepower at 6,500 RPM, it delivers the wild, fuel-blown appearance, explosive throttle response, and earth-shaking sound—while remaining controllable, street-drivable, and reliable on 91-octane pump fuel.

Unlike traditional blown injected combinations with harsh surge idle and on/off throttle behavior, this engine features a carefully developed low-compression setup, a custom NRE hydraulic roller camshaft, and a refined EFI calibration. The result is a big block that idles smoothly around 1,400 RPM, transitions cleanly into throttle, and can comfortably rack up real street miles. You get the full visual drama and auditory presence of a classic fuel motor—with manners that make it enjoyable to drive.

Street-Driven Blown Performance

“The Imposter” earns its name by delivering the look and sound of a full race fuel motor while behaving like a refined street engine. Throttle input is progressive instead of violent, making the car predictable and enjoyable in traffic. The hydraulic roller valvetrain eliminates frequent valve adjustments, and the Holley laptop-controlled EFI system ensures consistent fueling, easy cold starts, and adaptability to varying conditions.

This engine doesn’t whisper—it announces itself from two blocks away—yet it remains composed enough for cruising, car shows, and long street sessions.

Engine Block & Rotating Assembly

Block

• Big block Chevy configuration

• Splayed main caps

• 2-piece rear main seal

Rotating Assembly

• Callies Magnum 4.5″ stroke 4340 forged crankshaft

• Oliver billet connecting rods, 6.700″ length

• Custom JE forged pistons, 9:1 compression, 2618 alloy

• Ductile iron piston rings

This forged and billet rotating assembly is built to withstand sustained boost while maintaining smooth operation and durability.

Valvetrain & Timing Components

• Custom NRE hydraulic roller camshaft

• Hydraulic short-travel roller lifters

• Comp Cams shaft rocker system

• Trend pushrods

• Cloyes timing chain

• Cast aluminum Milodon timing cover

The hydraulic roller valvetrain plays a key role in keeping this blown engine street-friendly while maintaining aggressive performance.

Cylinder Heads, Blower & Fuel Injection System

Cylinder Heads

• Brodix 360 aluminum heads

• 2.300″ intake / 1.880″ exhaust Inconel valves

• PAC performance valve springs

Induction & Supercharger

• BDS competition intake manifold

• Billet BDS 14-71 roots-style supercharger, front offset

• Enderle Bird Catcher hat with (3) 5-9/16″ blades

Fuel Injection & Engine Management

• Flow-matched 1600 cc injectors

• Holley fully laptop-controlled EFI system

• Complete wiring harness and sensors

This system delivers the iconic injected-blown look with modern fueling precision and street-ready drivability.

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

• Cometic MLX head gaskets

• ARP fasteners throughout

• NRE billet fully CNC-machined valve covers

Specifications

• Engine Type: Roots-blown Big Block Chevy

• Displacement: 572 cubic inches

• Horsepower: 1,150 hp @ 6,500 RPM

• Fuel System: Electronic fuel injection

• ECU: Holley laptop-controlled EFI

• Compression Ratio: 9:1

• Supercharger: BDS 14-71 roots blower

• Camshaft: Hydraulic roller

• Fuel Requirement: 91-octane pump gas

• Idle Speed: Approx. 1,400 RPM

• Application: Hot rod, street machine, show car, aggressive street build

• Build Type: Hot Rod Series, turnkey configuration