NRE Twin-Turbo Mopar 426 | Hot Rod Series | 1250–1900 HP

The NRE Twin-Turbo Mopar 426 is the pinnacle of small-block Mopar performance, delivering 1,250 horsepower on 91-octane pump fuel and an astonishing 1,900 horsepower on race fuel. Designed as functional mechanical artwork, every component is custom-machined from billet aluminum or steel, ensuring unmatched quality, durability, and visual appeal. From the crankshaft to the intake manifold, each piece is engineered for extreme performance while retaining streetable drivability. This is the ultimate Twin-Turbo small-block Mopar for enthusiasts who demand power, precision, and audacious style.

Performance & Driving Experience

This engine combines staggering horsepower and torque with surprisingly smooth street manners. The Twin-Turbo setup, paired with NRE’s proprietary Octane-on-Demand dual injector system, allows for maximum power on race fuel while maintaining safe operation on 91 octane. Its throttle response is immediate, and the engine produces an unmistakable, aggressive sound that turns heads wherever it goes.

Engine Block & Rotating Assembly

Block

• Mopar Performance R3 tall deck block

• Steel splayed caps, 48-degree lifter angle

Rotating Assembly

• Bryant billet 4.0″ stroke crankshaft, Timken steel

• Oliver 4340 billet connecting rods, 6.200″

• JE forged pistons, 200 tool steel pins

• Hell Fire piston rings

• Clevite H series engine bearings

Forged and billet components deliver maximum strength and reliability under extreme boost, ensuring this small-block Mopar can handle the full 1900 hp output.

Valvetrain & Cylinder Heads

• Billet mechanical roller camshaft

• 904-size Jesel roller lifters

• Jesel shaft rockers

• W9 fully CNC-ported cylinder heads with Inconel valves and PAC springs

The precision CNC-ported heads and fully engineered valvetrain maximize airflow, reliability, and throttle response, while enabling long-term street and track use.

Induction & Turbocharging

• NRE Alien billet intake manifold with dual injector per cylinder

• Octane-on-demand system

• Integral dual throttle body with built-in fuel regulation

• Twin 76mm Gen 3 Mirror Image NRE turbochargers

• Tial 60mm V-Band billet wastegates

This highly engineered induction and turbo system provides instant boost, exceptional spool characteristics, and a massive power curve for both street and track performance.

Fuel Management, Ignition & Supporting Systems

• Holley Dominator ECU, laptop programmable with full sensors and wiring harness

• 36-2 crank trigger ignition

• Indy wet sump oil pan, pump, and pick-up

• ATI harmonic damper

• SCE copper head gaskets

• 100% billet valve covers

These systems allow precise fuel delivery, full electronic control, and reliable operation at extreme power levels, making this engine both streetable and track-ready.

Exhaust System

• Stainless steel tubular exhaust headers, fully engineered for maximum flow and turbo efficiency

Specifications

• Engine Type: Twin-Turbo Small Block Mopar

• Displacement: 426 cubic inches

• Horsepower:

  • 1,250 hp on 91-octane pump fuel

  • 1,900 hp on race fuel

• Fuel System: Dual injector per cylinder, Octane-on-Demand, Holley Dominator ECU

• Camshaft: Billet mechanical roller

• Cylinder Heads: W9 CNC-ported with Inconel valves, PAC springs

• Turbochargers: Twin 76mm NRE Gen 3 Mirror Image

• Wastegates: Tial 60mm V-Band billet

• Exhaust: Stainless steel tubular headers

• Rotating Assembly: Bryant billet crank, Oliver 4340 rods, JE forged pistons

• Compression Ratio: Low compression for street drivability

• Oil System: Indy wet sump with pump and pick-up

• Valve Covers: 100% billet

• Series: Hot Rod Series

• Build Type: Turnkey twin-turbo Mopar small-block