Buick Performer RPM Cylinder Head - Assm.

The Edelbrock Buick Performer RPM Cylinder Head – Assembled (Part #60049) is a high-flow aluminum cylinder head engineered for big block Buick engines seeking significant horsepower and torque gains. This assembled unit delivers the performance characteristics demanded by engine builders and serious hot rodders who require both flow optimization and structural reliability in a single bolt-on component.

The Performer RPM head features a 215 cc intake runner package paired with a 68 cc chamber volume, designed to optimize air-fuel mixture flow across the RPM range that matters most for street and strip applications. The 2.125-inch intake valves and 1.750-inch exhaust valves provide the valve diameter necessary for efficient breathing, while the 1.550-inch valve springs supply adequate seat pressure for reliable sealing at elevated engine speeds. The angle-plug design positions spark plugs for optimal combustion chamber geometry and flame front propagation. Cast aluminum construction delivers strength while keeping total assembly weight at 36.35 lbs—critical for minimizing rotating mass and improving acceleration response.

This assembled cylinder head is the choice for engine builders upgrading big block Buick powerplants from 455, 430, and 400 cubic inch displacements. Applications range from classic muscle car restorations seeking modern performance to custom hot rods where flow and efficiency translate directly to dyno gains. The pre-assembled design eliminates machine shop prep time and ensures valve train geometry is correctly established from installation.

Edelbrock's Performer RPM series occupies a proven middle ground in the big block Buick aftermarket—above basic stock replacement heads in flow capacity and below full-race CNC porting options in cost and complexity. The result is a bolt-on upgrade that delivers measurable power without requiring complete engine disassembly or custom valve train modification.