SBM Performer RPM Magnum Cylinder Head - Assm.

The Edelbrock SBM Performer RPM Magnum Cylinder Head Assembly is a fully assembled, ready-to-install performance cylinder head engineered for Small Block Mopar applications demanding increased flow and combustion efficiency. Built on proven Edelbrock performance architecture, this head delivers measurable gains in horsepower and torque through optimized port design and chamber geometry—critical for builders targeting serious power without sacrificing driveability or reliability.

The 176 cc intake runners paired with a 58 cc combustion chamber create the flow characteristics necessary for mid-range and peak power development across the RPM band. The 2.020-inch intake and 1.600-inch exhaust valve configuration supports high-lift cam profiles while maintaining reliable valve-to-piston clearance on properly-tuned stroker and standard displacement builds. Angled spark plug boss design improves ignition positioning and flame-front propagation. The 1.460-inch spring pocket accommodates performance valve spring packages up to that specification, enabling aggressive cam timing without coil bind. Cast aluminum construction provides excellent thermal conductivity and durability typical of Edelbrock's cylinder head portfolio.

This assembly is suited for street performance, bracket racing, and weekend warrior builds running Small Block Mopar platforms including 273, 318, 340, and 360 cubic inch displacements. Buyers integrating high-flow cylinder heads into existing engine combinations should verify clearances with intake manifolds, headers, and accessories before installation. The head arrives fully assembled and ready to bolt on, eliminating component sourcing and valve train assembly—a significant advantage for rapid engine builds or replacement applications.

Edelbrock's Performer RPM line balances manufacturing precision with affordable performance, making it a respected choice among Mopar enthusiasts and engine builders. Verify application fitment with your specific engine block, intake configuration, and header selection before purchase to ensure compatibility.