NRE 427 LS Naturally Aspirated


*Photos may show optional equipment.

650+ HP on 91 Octane

The LS Naturally Aspirated Series was designed for someone who wants to be able to drive his car on 91 Octane, anywhere, and still have that Nasty Hot Rod Sound. Our custom hydraulic roller camshaft requires no valve-train maintenance. The Fast learn electronics will automatically adjust to your altitude. This engine makes over 650+ horsepower and revs past 7000 RPM. It is one of the most fun naturally aspirated experiences you will have.

  • BLOCK: Dart LS Next Block 4.125 bore 9.240 deck
  • CRANKSHAFT: Dart Billet 4.0 Stroke
  • CONNECTING RODS: Boostline 6.125 long
  • PISTONS: JE Forged 10.8 to 1 Pistons
  • RINGS: Steel Ring Set
  • CAMSHAFT: Custom NRE Hydraulic Roller
  • LIFTERS: Delphi LS7
  • TIMING CHAIN: Cloyes Z Chain 
  • ROCKER ARMS: Comp Cams Shaft Rocker System
  • PUSHRODS: Manton Series 5
  • OIL SYSTEM: Holley 302-3 Oil Pan with hi-volume pump and pick-up
  • CYL HEADS: NRE AFR 260CC Six Bolt Fully CNC Ported LS3 Heads
  • HEAD GASKETS: Cometic
  • VALVE COVERS: NRE Billet fully CNC Machined
  • INTAKE MANIFOLD: Billet Shauns LS3 all billet intake
  • FUEL MANAGEMENT UNIT: Holley Fully Lap Top Programmable (Includes Full Harness and Sensors)
  • INJECTORS: 60lb Per Hour

"I wanted to thank you. Not only did your engine BLOW my expectations away with the shear power and drivability, it hasn't dropped one ounce of oil in the last year I’ve driven it." 

- Joey Larson, Owner of an NRE 572 Chevy Daily Driver NA Series


Daily Driver Series
Designed for the person who wants to drive their car daily. Experience a killer V8 sound. NRE Daily Drivers are brutally strong power plants.

- Maximum reliability
- Enormous amount of torque & hp
- Drives anywhere on 91 octane gas
Hot Rod Series
Best compromise between power and reliability. This engine setup has a very hollow and nasty sound, but the valve train acceleration is reasonable and soft.

- Larger power band
- More torque per cubic inch
- Drives anywhere on 91 octane gas
Pro-Touring Series
Power and performance for cars intended to be driven. From street, track, drag strip, or through cones at an auto-cross, get full street car manners with massive power.

- Smooth power and performance
- High quality components
- Runs on pump or race gas.
Warrior Series
Over the years we have developed some of the meanest race combo’s in the world and these are pure race engines unequaled in power and reliability.

- Patented Race Technology
- Season after season of engine reliability
- May require high-octane race fuel

STEP 1: Select a Motor Series

Every motor is built to the individuals needs. First, SELECT A MOTOR SERIES to let us know about your dream motor.

STEP 2: Devil's in the Details 

Your motor setup and details are made-to-order and engineered specifically to fit your ride. Tom Nelson and NRE engine builders will work with you to concept your unique vision.

Options & Upgrades

Wether you have specific parts or a style in-mind, we can help show you options and upgrades that will push you ahead of the competition. 

  • NRE Turbocharger sizes
  • NRE Alien Intake
  • Fuel Management Systems
  • Ignition upgrades
TT-572-BBC-alien-polished-finish.jpg Polished
TT-572-BBC-alien-black-finish.jpg Vader Black

Custom Finishes

Polished, Vader Black + More Custom Color Options...

STEP 3: Start Your Engine

NRE will supply a detailed price quote for your approval, at that time, a deposit is required to start. 


Are you ready to be powered by NRE?