BBM 440 Performer RPM Cylinder Head - Assm.

The Edelbrock BBM 440 Performer RPM Cylinder Head — Assembled is a purpose-built, high-flow cylinder head designed for Mopar B and RB-series engine platforms. This assembled unit delivers optimized breathing characteristics and combustion chamber efficiency, making it a proven choice for engine builders and performance enthusiasts seeking measurable gains in horsepower and torque across the RPM band.

The head features a 210 cubic-centimeter intake port, engineered to balance flow velocity with volumetric efficiency across mid-range and higher RPM operation. The 88 cubic-centimeter combustion chamber reduces quench area while supporting dynamic compression ratios suitable for street and strip applications. Valve sizing is specified at 2.140 inches for intake and 1.810 inches for exhaust, paired with 1.550-inch valve springs rated for aggressive lift profiles. The angle-plug configuration positions spark plugs for optimal flame propagation and reduces turbulence losses. Constructed from aluminum alloy, the head maintains weight discipline while delivering the thermal conductivity necessary for consistent performance across load conditions.

This assembled cylinder head is intended for Mopar B-block (318, 340, 360 cubic-inch) and RB-block (383, 400, 426, 440 cubic-inch) engine builds where increased flow and chamber design are priorities. Builders selecting this head typically target naturally aspirated street performance, bracket racing, or classic car restoration where factory head limitations restrict peak output. The Performer RPM platform accommodates both stock-profile and aggressive hydraulic roller cam profiles, providing flexibility across build objectives. Each unit arrives fully assembled and ready for installation, reducing final assembly time and variability.

Edelbrock's Performer RPM series has established itself as a baseline upgrade path within the Mopar high-performance ecosystem. The design balances proven flow characteristics with cost efficiency, making it accessible to builders managing both budget and timeline constraints. Compatibility with common manifold configurations and accessory packages ensures straightforward integration into existing platforms. Proper installation by a qualified machine shop or experienced engine builder is recommended to ensure valve clearance, spark plug fitment, and deck-surface integrity.