Speedmaster PCE281.2140 Mopar Chrysler BB 383 440 Hydraulic Flat Assembled Cylinder Heads

The Speedmaster PCE281.2140 is a pair of assembled hydraulic cylinder heads designed for Mopar Chrysler big-block 383 and 440 engines. These heads feature 265cc intake and 74cc combustion chamber volumes, engineered to deliver improved airflow and performance while maintaining compatibility with original engine specifications and existing hydraulic lifter systems.

These cylinder heads arrive fully assembled and ready to install, eliminating the need for additional valve train setup. The hydraulic flat tappet design ensures reliable operation with your engine's original hydraulic lifter configuration, making them an ideal choice for street applications, restorations, and performance rebuilds where you want to preserve the factory hydraulic system. The precise chamber sizing supports efficient combustion and helps optimize horsepower and torque across the RPM range.

Key Features & Benefits

• Hydraulic Flat Tappet: Engineered for use with original Mopar Chrysler hydraulic lifter systems without modification.
• 265cc Intake / 74cc Chamber: Optimized port and combustion chamber volumes deliver improved airflow and performance characteristics.
• Fully Assembled: Complete and ready to install, saving time and eliminating the need for separate valve train assembly.
• Big-Block 383/440 Fit: Direct compatibility with Mopar Chrysler BB 383 and 440 engine blocks.
• Performance-Oriented Design: Engineered to enhance airflow, combustion efficiency, and overall engine responsiveness.

Specifications

Ideal Applications

• Big-block Mopar engine rebuilds and performance upgrades
• Engine restoration projects for 1960s–1970s Chrysler vehicles
• Street performance and cruiser applications
• Engine swaps requiring Mopar big-block compatibility