Edelbrock 49557 Edelbrock/Musi 555 RPM XT EFI 723 HP

  • Sale
  • Regular price $17,650.95

Universal Fit, 555 cu. in. Engine Displacement, Long Block Crate Engine Type
**$175 shipping included in price


The Edelbrock/Musi 555 Pro-Flo 4 XT is the most powerful package in our line and features the Pro-Flo 4 XT electronic fuel injection. The Pro-Flo 4 XT EFI system consists of a front mount 90mm throttle body design manifold with a large plenum and tapered runners that deliver 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 7" Android tablet with pre-loaded E-Tuner app and calibrations.

Like the Pro-Flo 4 single-plane application, this engine is ready to run right out of the crate with pre-loaded calibrations. The E-Tuner app uses a Bluetooth wireless connection to communicate with the ECU’s self-learning capability to continually adjust the calibration to get the maximum performance of your engine.

  • Displacement: 555 c.i.d.
  • Horsepower: 723 hp
  • Torque: 652 ft-lbs
  • Compression: 10.0:1
  • Block: Big-Block (9.8" deck height)
  • Crankshaft: Forged Steel 4.250"
  • Pistons: Forged
  • Camshaft: Rollin’ Thunder Hydraulic Roller #2264
  • Rocker Arms: 1.7:1 Roller #77790
  • EFI Systems: Pro-Flo 4 XT #35883
  • Cylinder Heads: E-CNC #79555
  • Distributor: Included
  • Valve Covers: Cast Aluminum
  • Warranty: 2-Year / Unlimited Mileage

Some parts are not legal for use in California or other states with similar laws/regulations