Speedmaster PCE281.2170 Oldsmobile 400 425 455 Hydraulic Roller Assembled Cylinder Heads 188cc

The Speedmaster PCE281.2170 is a complete assembled cylinder head set engineered for Oldsmobile 400, 425, and 455 big-block engines. Featuring 188cc intake and 77cc exhaust ports with hydraulic roller cam compatibility, these heads deliver optimized flow characteristics and reliability for high-performance and restoration builds. The assembled design eliminates the need for individual component sourcing and valve train assembly.

Ideal for street performance, drag racing, and engine rebuilds, these cylinder heads are ready to bolt onto your big-block Olds engine. The hydraulic roller design ensures durability and consistent valve actuation across a wide RPM range. Speedmaster manufactures these heads to exacting standards, providing a solid foundation for both stock-style and modified engine applications.

Key Features & Benefits

• Assembled Ready-to-Install: Comes fully assembled, eliminating the need for separate valve train and component gathering.
• Hydraulic Roller Compatible: Designed for use with hydraulic roller camshafts for reliable, low-maintenance valve operation.
• 188cc Intake Ports: Large intake ports optimize fuel-air mixture flow into the combustion chamber.
• Oldsmobile Big-Block Fitment: Direct fit for Oldsmobile 400, 425, and 455 cubic inch engines.

Specifications

Ideal Applications

• Oldsmobile big-block engine rebuilds and restorations
• High-performance street and drag racing builds
• Engine swaps into classic muscle cars
• Performance upgrade for vintage Oldsmobile vehicles