Edelbrock/Musi 555 Pro-Flo 4 XT EFI Big-Block Chevy Crate Engine

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Edelbrock Crate Engine, Edelbrock/Musi, 555 c.i.d. Big Block Chevy, Pro-Flo 4 XT EFI
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Direct from Edelbrock only! Edelbrock Musi 555 C.I.D. 697 hp Pro-Flo 4 long block crate engines are powerful, big cubic inch packages featuring the ultra-efficient Edelbrock E-CNC cylinder heads. The heads are ported where it counts to achieve optimal airflow for maximum horsepower and torque in high performance street and light-duty racing applications. The key advantage of these cylinder heads is their increased airflow for big power, and the exhaust port exits are in the stock location, which allows for the use of readily available off-the-shelf headers.



Manufacturer Edelbrock
Application Application Specific
UPC 00085347495573
Quantity Sold Individually
Wiring Harness Included No
Main Bearing Cap Bolt Quantity 4-Bolt
Availability Note Built to Order
Warranty 24 Months
Horsepower Possible 723 HP
Type Big-Block Chevy
Camshaft Type Rollin' Thunder, Hydraulic Roller
Rocker Arm Type Roller
Carburetor Type Not Included
Rocker Arm Ratio 1.7:1
Induction Type Electronic Fuel Injection
Spark Plugs Included No
Intake Manifold Type Throttle Body XT, Black Powder Coated
Oil Filter Included Yes
Rear Main Seal Type 2-Piece
Valve Cover Material Cast Aluminum
Hardware Included Yes
Manifold Material Aluminum
Plug Wire And Boot Included No
Compression Ratio 10.0:1
Construction Type Assembled
Flywheel Included No
Cylinder Head Type Performer E-CNC
Piston Type Forged Aluminum
Timing Cover Included Yes
Cylinder Head Material Aluminum
Valve Cover Included Yes
Harmonic Balancer Included Yes
Crankshaft Material Forged Steel
Air Cleaner Type Not Included
Distributor Included Yes
Throttle Body Included Yes
Displacement 555 cid
Oil Pan Included Yes
Water Pump Included No
Engine Block Material Cast Iron
Torque 652 ft-lb
Calibration Yes
Alternator Included No
ECU Included Yes
Fuel System Injection Type Pro-Flo 4 XT, Sequential Port
Emissions Code
Hazardous Materials Warning WARNING: This product can expose you to Chromium, Lead, and Zinc which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit
Universal Or Specific Fit Specific
Valve Cover Type 555, Low Profile, Black Textured Powder Coated