Edelbrock/Musi 555 RPM XT EFI 10.0:1 (723 HP & 652 TQ)

Edelbrock/Musi 555 RPM XT EFI 10.0:1 (723 HP & 652 TQ) Crate Engine by Edelbrock
  • Engine Specifications:
  • Displacement: 555 c.i.d.
  • Horsepower: 723 hp
  • Torque: 652 ft-lbs.
  • Compression: 10.0:1
  • Block: Big-block 9.8"
  • Crankshaft: Forged Steel 4.250"
  • Pistons: Forged
  • Camshaft: Rollin' Thunder Hydraulic Roller #2264
  • Rocker Arms: 1.7:1 Roller
  • EFI System: Pro-Flo XT #35593
  • Cylinder Heads: E-CNC #79555
  • Distributor: Included
  • Valve Covers: Cast Aluminum
  • Warranty: 2-year / Unlimited mileage
Edelbrock/Musi 555 crate engines are a powerful big cubic inch package that features 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 allows 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.

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

Application Dyno Emissions Part #
Edelbrock/Musi 555 RPM XT with Pro-Flo XT Fuel Injection (water pump not included) 47550

The following guide is designed to help you determine which Edelbrock components are legal for use on your vehicle. Learn more about Edelbrock Product Emissions Guide.

    50-State Legal
    For Racing Use ONLY
    For Use on Pre-Pollution Controlled Vehicles (PPCV)
    Stock Replacement Part
    Engine Swaps