Speedmaster PCE281.2090 Chevy GM LS1 LS2 LS6 198cc Hydraulic Roller Assembled Cylinder Heads

The Speedmaster PCE281.2090 cylinder heads are precision-engineered assemblies designed for Chevy GM LS-series engines, specifically LS1, LS2, and LS6 blocks. These hydraulic roller cylinder heads feature a 198cc intake port and 60cc combustion chamber, optimized for improved flow and combustion efficiency in high-performance and street applications. The 6-bolt design ensures secure fastening to your engine block, and the complete assembled configuration means you receive a ready-to-install component with all critical valvetrain geometry already set.

These heads are built to support hydraulic roller lifter technology, which provides consistent valve actuation and reduced friction compared to solid roller or flat-tappet designs. The 198cc intake runner volume balances mid-range torque with upper-RPM breathing capability, making these heads suitable for both naturally aspirated and moderately boosted LS builds. Installation onto compatible LS1, LS2, or LS6 blocks is straightforward, and the rigid casting delivers durability for engine rebuilds, performance upgrades, and long-term reliability in street, strip, and track environments.

Key Features & Benefits

• 198cc Intake Port: Optimized flow design supports improved cylinder filling and combustion efficiency.
• 60cc Combustion Chamber: Compact chamber volume aids compression and flame propagation in LS-series engines.
• Hydraulic Roller Design: Smooth, low-friction valvetrain operation with consistent lift and duration.
• 6-Bolt Configuration: Secure, code-compliant fastening to LS1, LS2, and LS6 engine blocks.
• Fully Assembled: Complete heads arrive ready to install—no additional valve work or machine time required.

Specifications

Ideal Applications

• LS-series engine rebuilds and performance upgrades
• Naturally aspirated street and strip builds
• Moderate boost / supercharged LS engine projects
• Replacement heads for original LS1, LS2, or LS6 blocks