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Based in Mooresville, North Carolina, Pat Musi Racing Engines is a one-stop shop for sportsman engines with a Pro Mod pedigree. Pat Musi Racing Engines controls every component of the engine, from in-house manifolds to custom cylinder heads.

Pat Musi has been at the forefront of electronic fuel injection (EFI) technology for over two decades, and that experience is available to every customer with custom-designed EFI systems, exclusive software and individualized tuning. Whether going rounds in Super Comp or setting records in Pro Nitrous, each customer receives the same quality and workmanship Pat Musi Racing Engines is known for worldwide.


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. 

Features Include:


AVS2 Carbureted


676 horsepower with 649 ft-lbs of torque


Tuned to run on 91-octane pump gas


Competition ready yet ultra-reliable for daily street use

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379-B Timber Rd
Mooresville, NC 28115

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