NRE Naturally Aspirated 572 BBC – 700 HP Turn-Key Big Block Engine

The NRE Naturally Aspirated 572 BBC delivers 700 horsepower and 690 ft-lbs of torque while maintaining street-friendly manners and long-term reliability. Built as a daily-driveable powerhouse, it runs on 91-octane pump gas and delivers instant throttle response, effortless drivability, and the unmistakable attitude expected from a high-end big block. Each engine is broken-in, dyno-tested, and tuned for optimal performance before delivery, ensuring a ready-to-run solution for hot rods, muscle cars, restomods, and custom street machines.

Performance Overview

This 572 BBC is designed as a strong, dependable workhorse with refined operation and outstanding durability. A custom NRE hydraulic roller cam eliminates the need for valve adjustments, while the low-profile induction setup offers excellent fitment under tight hood lines. The combination of premium American-made components, meticulous machine work, and precision tuning creates a responsive, torque-rich package capable of handling daily use without sacrificing performance.

Engine Construction and Internal Components

Block

• Dart 4.500″ bore

• Splayed caps

• 2-piece rear main seal

Rotating Assembly

• Crankshaft: Callies Magnum 4.5″ stroke, 4340 forged

• Connecting Rods: Callies 4340 forged H-beam 6.7″ rods

• Pistons: JE forged, 10:1 compression

• Rings: Plasma moly

Camshaft & Valvetrain

• Camshaft: Custom NRE hydraulic roller

• Lifters: Hydraulic short-travel roller lifters

• Rocker Arms: Comp Cams shaft rocker system

• Pushrods: Trend

• Timing Chain: Cloyes

• Timing Cover: Cast aluminum Milodon

Cylinder Heads & Induction System

Cylinder Heads

• Brodix 360 aluminum heads

• 2.300″ / 1.880″ Inconel valves

• PAC racing springs

Sealing & Fasteners

• Fel-Pro head gaskets

• ARP fasteners throughout

Intake & Fueling

• Edelbrock Victor Jr intake manifold

• 1000 CFM FST billet carburetor

Ignition, Oil System & Accessories

Ignition

• MSD Pro Billet distributor

Oil System

• Moroso high-capacity oil pan

• High-volume oil pump & pickup

Damping

• ATI harmonic damper

Valve Covers

• NRE billet CNC-machined valve covers

Exhaust

• Headers shown in images not included

Key Specifications