Scorpion Performance Engine Rocker Arm

Scorpion Performance Engine Rocker Arms: Precision Valvetrain Built in the USA

When engine builders demand a rocker arm that delivers consistent, reliable valvetrain performance under extreme conditions, Scorpion Performance is a name that consistently rises to the top. As a dedicated American manufacturer with over two decades in the performance engine arena, Scorpion has built its reputation around one core product category: engine rocker arms. Every rocker they produce is engineered for the real demands of high-performance street builds, endurance racing, drag racing, and even marine applications.

A Product Line Built Around Your Application

Scorpion's rocker arm lineup is organized into distinct series, each targeting a specific performance envelope. At the foundation is the Race Series, which serves as the bread-and-butter of Scorpion's valvetrain catalog — the starting point for an anvil-solid valvetrain build. Race Series rockers are precision-crafted via high-tech manufacturing methods and fully CNC-machined, offering more clearance for retainers and springs while handling up to .950 in. lift and 950 lbs. of open spring pressure. Key features include aerospace-grade 7000 Series aluminum, needle bearing fulcrums and roller tips, precision-ground needle bearings, a centerless ground trunnion, directed oiling, and black oxide coated steel parts.

Stepping up in capability is the Endurance Series, which takes all the strengths of the Race Series and adds additional benefits — including trimming approximately 28 grams of weight on average and adopting a lower profile that is more likely to fit under a stock valve cover. Scorpion specifically designed these rocker arms for endurance racing engines with better fitment, handling up to 750 lbs. of open spring pressure. Endurance Series rocker arms feature fully-radiused bodies CNC-machined from 7000 Series aluminum, with bodies that are micropeened and blasted to reduce residual stresses, fitted with a needle bearing fulcrum and roller tip.

For builders pursuing maximum valvetrain stability at high RPM, Scorpion also offers the Endurance Series Shaft-Mount Rocker Kits. These shaft-mount rockers are over-engineered so the engine's valvetrain timing stays rock-solid race after race — a critical advantage at high RPM where stud-mount rockers can deflect and move, costing horsepower and increasing valvetrain wear. Shaft rocker lines also feature solid bronze bushing upgrades as well as pressurized oiling and valve spring oiling options.

Engine Coverage Across Makes and Platforms

Scorpion offers Race Series rocker arms for many common Chevy, Pontiac, Ford, and AMC motors, with Race Series options specifically for GM LS engines as well. Endurance Series rockers cover a range of common Chevy, Ford, and AMC engines, with options for Chrysler Magnum V8s too. For marine builders, there is also a dedicated Endurance Marine Series made to handle the unique demands of a boat motor's valvetrain.

American Manufacturing and Quality Assurance

Scorpion Racing Products is a leading American manufacturer of top-quality valvetrain components for high-performance street and racing applications. All shaft mount rockers are produced in Scorpion's Florida facility, which is ISO 9001 certified, using aerospace and bearing quality steels as well as 7000-series aerospace alloy aluminum that performs better at temperature than competing 2000-series alloys. All Scorpion rocker arms are also backed by the brand's exclusive lifetime warranty.

Whether you're refreshing a street performance build or assembling a dedicated racing engine, Scorpion Performance rocker arms represent a proven, American-made solution for builders who refuse to compromise on valvetrain precision.