Speedmaster Chevy LS3 4.065" Bore 1.065" .927" Flat Top Forged Pistons PCE305.1125.01

The Speedmaster Chevy LS3 forged pistons (PCE305.1125.01) are precision-engineered high-performance engine components designed for LS3 engine builds and rebuilds. These flat-top forged pistons feature a 4.065" bore diameter and .927" crown height, delivering the durability and strength required for demanding engine applications. Forged construction provides superior strength compared to cast alternatives, making these pistons ideal for high-RPM and forced-induction environments.

These pistons are commonly used in custom engine builds, performance racing applications, and engine restoration projects where OEM replacement or upgraded components are needed. The flat-top design and precise bore sizing ensure proper fitment and ring seating in LS3 engine blocks. Whether you're building a street machine, track engine, or completing a full engine rebuild, these forged pistons provide the reliability and performance characteristics demanded by enthusiasts and professional builders alike.

Key Features & Benefits

• Forged Construction: Delivers superior strength and durability compared to cast pistons, supporting high-RPM and turbocharged applications.
• 4.065" Bore Diameter: Precisely engineered to LS3 engine specifications for proper fitment and ring seating.
• Flat-Top Design: .927" crown height engineered for optimal performance characteristics in LS3 configurations.
• Performance-Grade Material: Built from high-quality forged alloy for enhanced reliability in demanding engine builds.

Specifications

Ideal Applications

• Performance engine builds and rebuilds for Chevy LS3 engines
• High-RPM racing and forced-induction engine applications
• Custom engine restoration and upgrade projects
• Professional and enthusiast engine assembly