NRE Blown Injected Roots 572 Hot Rod – The Imposter

NRE Blown Injected Roots 572 Hot Rod Engine for Sale. The Imposter Supercharged Big Block Crate Engine.

The NRE 572 hot rod engine known as The Imposter is one of the most visually striking and technically serious big block builds Nelson Racing Engines produces. A 572 cubic inch big block topped with a roots-style supercharger and a mechanical fuel injection hat is a statement in any engine bay. The combination delivers real output and real presence in equal measure. At McClain Auto Part, we source and supply high-end performance engines out of Cleveland, Ohio since 2009. The Imposter is one of the most distinctive and specialized units we carry.

Builders come to us for this engine for specific reasons. Some are building a pro-street or hot rod where the visual presence of a blown injected big block is as important as the output numbers. Others are building a show car or custom chassis where the engine needs to perform as well as it looks. In addition, a group of serious hot rod builders targets the blown injected 572 engine specifically because the combination of 572 cubic inches, a roots blower, and mechanical injection produces a power curve and an aesthetic that no other engine configuration delivers.

The goal is always the same. A documented, dyno-tested supercharged big block Chevy engine that looks the way it performs and performs the way it looks.

Key Features

• NRE 572 hot rod engine, Nelson Racing Engines Blown Injected Roots build
• 572 cubic inch big block displacement
• Roots-style supercharger, NRE specification
• Mechanical fuel injection hat, period-correct hot rod aesthetic
• Forged rotating assembly throughout, crankshaft, connecting rods, and pistons
• High-flow cylinder heads, purpose-built for supercharged big block output
• Purpose-matched camshaft, NRE specification
• Dyno tested before shipping, figures documented
• NRE build documentation and dyno sheet ship with every engine
• 6-month warranty against internal mechanical defects
• Ships freight to all 50 states from Cleveland, Ohio
• Most orders processed within 3 to 5 business days

The NRE Imposter Platform

Nelson Racing Engines designed The Imposter around a specific vision. A big block hot rod engine that looks like it belongs at an NHRA fuel altered event but drives on the street every day. The 572 cubic inch displacement, roots blower, and mechanical injection combination is a direct reference to the blown fuel cars of the 1950s and 1960s that defined American hot rod culture. NRE takes that aesthetic and builds it with modern precision machining, modern component selection, and a dyno-verified output target.

Why 572 Cubic Inches

The 572 cubic inch big block is the largest displacement production-based BBC build that NRE offers in the Imposter configuration. More displacement means more air and fuel per engine cycle at any given boost level from the roots blower. At the same supercharger drive ratio, a 572 produces more output than a 454 or 496. Furthermore, the larger displacement produces stronger torque at lower RPM, which gives The Imposter the broad, pulling power curve that characterizes the best hot rod engines.

Roots Supercharger on a Big Block

The roots-style supercharger is a positive displacement blower that moves air in direct proportion to its rotational speed. Unlike a centrifugal supercharger that builds boost progressively with RPM, a roots blower produces boost immediately from low RPM. As a result, The Imposter delivers its output across the full RPM range rather than building toward a top-end peak. That characteristic makes the engine feel strong and responsive on the street in ways that a top-end-biased naturally aspirated or centrifugal build does not.

Mechanical Fuel Injection

The mechanical injection hat on The Imposter is the visual centerpiece of the engine. Beyond aesthetics, mechanical injection delivers fuel directly and precisely to each cylinder through individual injector nozzles fed by a mechanical injection pump. This system responds instantly to throttle input and distributes fuel evenly across all cylinders without the mixture distribution compromises of a carburetor on a high-output big block. Consequently, The Imposter produces consistent output across the power band and responds cleanly to throttle inputs at any RPM.

NRE Build Standards on The Imposter

The Imposter is not a show engine with performance as an afterthought. NRE builds it to the same precision standards as every Outlaw Series engine in the lineup. The rotating assembly uses forged components throughout. The cylinder heads are CNC ported to NRE specifications for maximum flow at the boost levels the roots blower produces. The camshaft is selected and ground specifically for the combination of 572 cubic inches, roots supercharger boost, and mechanical injection fuel delivery. Every component is therefore selected to work with the others as a matched system rather than a collection of individually chosen parts.

Technical Specifications

Specifications vary by specific NRE Imposter build configuration. Call us to confirm the exact spec on the current unit in inventory.

Call us to confirm build specification, dyno figures, compression ratio, and fuel requirement on the current unit.

What Is Included

The NRE Imposter ships as a complete performance assembly. Included components vary by build configuration.

Standard With Most NRE Imposter Builds

• Complete assembled NRE 572 blown injected long block
• Roots-style supercharger assembly, NRE specification
• Mechanical fuel injection hat and injection system components
• CNC ported cylinder heads, fully assembled
• Hydraulic or solid roller camshaft and valvetrain
• Roller rocker arms, NRE specification
• Valve covers
• Oil pan, confirm sump configuration at order
• Timing cover
• Harmonic balancer
• Front accessory drive provisions
• NRE build documentation and dyno sheet

Fuel System Details

The mechanical injection system on The Imposter is a complete fuel delivery system specific to the blown injected big block configuration. Confirm your fuel supply system requirements, including pump capacity and fuel line sizing, when you call. We advise on what your chassis fuel system needs to support the mechanical injection pump at full output.

ECU and Ignition

The Imposter uses a mechanical injection system rather than an electronic fuel injection ECU. Ignition management on a blown injected big block requires a purpose-built ignition system capable of handling the timing demands of a supercharged high-compression big block. Confirm your ignition system plan when you call and we advise on what the build requires.

Condition and Build Quality

Every NRE Imposter ships from our facility after a final review before packaging. The review confirms NRE build documentation and dyno results.

What We Confirm Before Every Unit Ships

• NRE build documentation reviewed and confirmed
• Dyno sheet reviewed, horsepower and torque figures confirmed
• Full visual inspection of block, heads, supercharger, and injection components
• Roots supercharger housing and rotor condition confirmed
• Mechanical injection system components inspected for completeness and condition
• Oil condition confirmed, no contamination from storage
• All external hardware confirmed present and intact
• Gaskets confirmed sealed at valve covers and oil pan
• Timing cover and front accessories confirmed intact
• Overall assembly condition confirmed before packaging

NRE documentation and the dyno sheet ship with the engine. You receive specific horsepower and torque figures for your exact unit before the order is finalized.

Performance Applications

The NRE 572 hot rod engine suits builds where output and visual presence are equal priorities. Common applications include:

• Pro-street and hot rod builds where the blown injected aesthetic is the centerpiece
• Custom chassis show cars where the engine is the visual focal point
• Classic Camaro, Chevelle, and Nova restomod builds calling for a traditional blown hot rod look
• C10 and square body truck builds where the roots blower and injection hat make a statement
• Custom roadster and traditional hot rod builds
• Any big block Chevy compatible chassis where the blown injected configuration is the performance and aesthetic target

Fuel System Requirements

The mechanical injection system on The Imposter requires a fuel supply system matched to its demands. Fuel pump capacity, fuel line sizing, and pressure regulation all need to match the injection pump’s requirements at full output. Unlike an EFI system with return line pressure regulation, the mechanical injection system requires careful fuel supply planning. Confirm your fuel system specification with us before ordering.

Ignition System

A blown injected big block requires a purpose-built ignition system. The combination of high compression, supercharger boost, and mechanical injection timing demands a distributor and ignition control system capable of precise timing management under varying load conditions. Confirm your ignition system plan before ordering the engine.

Transmission

The NRE 572 Imposter uses a standard big block Chevy bellhousing bolt pattern. Common transmission choices for this output level include the Turbo 400 built for high torque input, the Powerglide for drag-oriented builds, and purpose-built high-capacity automatics. For manual applications, confirm input shaft and torque capacity with your transmission builder. Confirm your transmission’s torque rating matches the specific NRE build output before ordering.

Chassis and Clearance

The roots supercharger and mechanical injection hat add significant height to the engine. Confirm hood clearance in your chassis before ordering. Most traditional hot rod and pro-street builds use a raised or custom hood to accommodate the blower height. Confirm your clearance plan before the engine arrives.

Shipping and Warranty

Shipping

We ship from Cleveland, Ohio to all 50 states. Every NRE Imposter ships fully crated and secured on a freight pallet, with the supercharger and injection components protected for transit. Most orders are processed and ready to ship within 3 to 5 business days after confirmation and payment. You receive a tracking number once the engine leaves our facility.

Warranty

Every engine we sell comes with a 6-month warranty against internal mechanical defects. NRE build documentation and dyno results ship with the engine. If a covered mechanical failure occurs within the warranty period, contact us directly. We work toward a fair resolution, whether a replacement engine, credit, or repair guidance depending on the situation.

We have been honoring warranty claims since 2009.

About McClain Auto Part

We have been sourcing and supplying high-end performance engines out of Cleveland, Ohio since 2009. Over 10,000 engines shipped. Rated 4.9 out of 5 stars across 800 or more verified Google reviews. Every engine sits physically in our Cleveland warehouse, our team confirms it, and it ships ready to install.

We are not a listing aggregator or broker. When you call us about an NRE 572 hot rod engine for sale, you speak directly with someone who understands The Imposter platform, knows the fuel system and ignition requirements specific to this build, and gives you accurate information about the exact unit in current inventory.

Frequently Asked Questions

What Is the NRE Imposter Engine?

The NRE Imposter is a 572 cubic inch big block Chevy V8 topped with a roots-style supercharger and mechanical fuel injection hat. Nelson Racing Engines builds it to combine traditional hot rod aesthetics with modern precision assembly and dyno-verified output.

How Much Horsepower Does the NRE 572 Imposter Produce?

Horsepower varies by specific build configuration. Contact us for the dyno figures on the current unit in inventory. NRE documents every build with a dyno sheet that ships with the engine.

Does the Imposter Use Electronic Fuel Injection?

No. The Imposter uses a mechanical fuel injection system with a mechanical injection pump and individual cylinder nozzle delivery. This system is a key part of the engine’s traditional hot rod character and requires a fuel supply system matched to its specific requirements.

Does It Need a Custom Tune?

The mechanical injection system requires setup and jetting rather than an ECU tune. The ignition system requires proper timing setup for the supercharged big block configuration. Confirm your setup plan with an experienced blown injected big block builder before installation.

What Hood Clearance Does the Imposter Require?

The roots supercharger and mechanical injection hat add significant height to the engine. Confirm hood clearance in your chassis before ordering. Most builds require a raised or custom hood to clear the blower and injection system.

What Transmission Works With the Imposter?

The NRE 572 uses a standard big block Chevy bellhousing pattern. Common choices include the Turbo 400, Powerglide, and purpose-built high-capacity automatics. Confirm your transmission’s torque capacity matches the build before ordering.

Does It Include a Dyno Sheet?

Yes. NRE build documentation and the dyno sheet ship with every engine. You receive specific horsepower and torque figures for your exact unit before the order is finalized.

What Does the Warranty Cover?

Six months from purchase against internal mechanical defects. NRE build documentation is included at point of sale. Contact us directly if a covered issue arises.

Ready to Order

If you are looking for an NRE 572 hot rod engine for sale, a blown injected 572 engine, or a Roots supercharged 572 big block for a pro-street build, hot rod project, or show car, call us. Confirm your application, chassis clearance, fuel system plan, and ignition setup and we will tell you exactly what we have in stock. Build specification, dyno figures, supercharger and injection system condition, included components, and shipping timeline.

NRE Imposter inventory is limited by build availability. If you have questions before committing, ask them.

McClain Auto Part. Cleveland, Ohio. In business since 2009.