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Born from the Edelbrock-Musi crate engine partnership, the 555 Crate Engine is assembled by the master engine builder himself, Pat Musi, using nothing but the best Edelbrock components including CNC-ported aluminum cylinder heads, Victor Jr. intake manifold, forged 10.0:1 pistons, forged steel crank, AVS2 Series 800 CFM carburetor, Rollin’ Thunder hydraulic roller cam and valvetrain, and Max-Fire ignition system.
The Edelbrock/Musi 555 RPM Pro-Flo 4 performance crate engine is complete with Pro-Flo 4 electronic fuel injection and is assembled with intake manifold, fuel injectors, fuel rails and throttle body, electronic engine control unit (ECU), handheld calibration module, high quality billet distributor, complete harness, O2 sensor & bung, fuel hose, hardware and software. This engine can be fine-tuned with the handheld calibration module without the need for a laptop.
The Edelbrock/Musi 555 Pro-Flo XT is the most powerful crate engine package in our line and features our powerful Pro-Flo XT electronic fuel injection. The Pro-Flo XT EFI system consists of a skillfully 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, O2 sensor & bung, throttle body, electronic engine control unit (ECU) and handheld calibration module. This engine can be fine-tuned with the handheld calibration module without the need for a laptop.
Pat Musi’s reputation for winning began in ’71 on the streets of Queens, New York, at the wheel of a souped-up ’55 Chevy. He wisely transitioned from the streets to more legal forms of drag racing and following brief stints in the bracket and Modified ranks, Pat Musi rose to prominence as one of the fiercest competitors in Pro Stock and a true champion with 8 PDRA Pro Street World Championships.
Today, Pat brings that experience of driving a race car into the engine-building room at Pat Musi Racing Engines where many of the top Pro Mod racers go for their race-winning engines. As he has since 2004, Pat works exclusively with us to share his expertise in the Edelbrock-Musi Crate Engine Program that was created specifically for drag racers looking for big horsepower with unmatched durability. The street segment of this partnership includes the Edelbrock-Musi 555 Crate Engine, a complete ready-to-run power plant that makes an incredible 723 horsepower and 652 ft-lbs of torque on pump gas.
HOMETOWN: Carteret, NJ
RACING EXPERIENCE: 8-time Pro Street World Champion, 4-Time PDRA Nitrous Wars Engine Building Champion, NHRA Pro Modified Event Winner, IHRA Pro Modified Event Winner, IHRA Pro Stock Event Winner, NHRA Pro Stock competitor
CAREER BEST ET / SPEED (1/8 mile): 3.615 seconds / 209.23 MPH
When you invest in an Edelbrock-Musi 555 Crate Engine, you're not just buying an ordinary engine with some shiny parts. You become part of an exclusive club of horsepower aficionados who own a custom-built engine that others only dream about. With every 555 Crate Engine purchase, here is what you get in addition to a powerful and reliable street power plant: