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Edelbrock 47550 - Edelbrock Musi 555 RPM XT Crate Engines

Edelbrock 47550 - Edelbrock Musi 555 RPM XT Crate Engines
Edelbrock 47550 - Edelbrock Musi 555 RPM XT Crate Engines

JEGS Part Number: 350-47550

Edelbrock/Musi 555 RPM XT EFI Crate Engine
  • Chevy 555 (Big Block)
  • 723 HP, 652 ft/lbs
  • Pro-Flo XT EFI
  • Water pump not included
      $18,545.23 Order Today Ships 02/18/16

    Edelbrock 47550 Details

    Electronic Fuel Injection

    The Edelbrock/Musi 555ci big-block Chevy is a powerful package and features Edelbrock's precision Pro-Flo XT electronic fuel injection. The Pro-Flo XT EFI system consists of a newly engineered intake manifold with a unique design delivers more horsepower and torque than a traditional single-plane intake manifold. The system also includes fuel injectors, fuel rails, throttle body, electronic engine control unit (ECU) and handheld calibration module. This engine can be tuned with the handheld calibration module or with a laptop.

    After detailed assembly and dyno testing, you can rest assured that each motor was constructed by hand with the utmost quality and care by Pat Musi, applying 37+ years of big block Chevy experience.
    2 year/unlimited mileage warranty.


  • Displacement: 555 c.i.d.
  • Horsepower: 723
  • Torque: 652
  • Compression Ratio: 10:1
  • Bore/Stroke: 4.560" x 4.250"
  • Max Recommended RPM: 6500
  • Block: Dart Big-M 9.8"
  • Crank: Scat forged steel 4.250"
  • Pistons: JE forged
  • Rods: H-beam
  • Camshaft: Rollin Thunder Hydraulic Roller
  • Rocker Arms: Crane 1.7:1 Roller
  • Cylinder Heads: E-CNC (350-79559)
  • Intake Manifold: Victor Jr. EFI
  • EFI: Pro-Flo XT (350-35593)
  • Distributor: Mallory
  • Oil Pan: 6-Quart
  • Valve Covers: Cast Aluminum

  • Edelbrock Musi 555 RPM XT Crate Engines


    Edelbrock/Musi 555 crate engines are a powerful big cubic inch package that feature the all new Edelbrock E-CNC cylinder heads for the ultimate in Edelbrock performance. E-CNC cylinder heads are fully CNC ported to achieve optimal air-flow for maximum horsepower and torque in high-performance street and light-duty racing applications. They feature exhaust port exits in the stock location, which allow for the use of off-the-shelf headers. They are available in three options: carbureted and with Pro-Flo 2 or Pro-Flo XT electronic fuel injection. Each engine is assembled by 8-time Pro Street World Champ Pat Musi. They all deliver maximum HP and torque on 91 octane.

    Edelbrock 47550

    RPM Power Range
    1500 - 6500
    Fuel Delivery
    Fuel Injection
    Not Legal
    Compression Ratio
    10.0: 1
    Engine Make/Size
    Chevy Big Block 555
    Manufacturer's Part Number:
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