Speedmaster Chevy SBC 383 cu in 6.0" Flat Top Forged Pistons PCE305.1131 2.5mm

The Speedmaster PCE305.1131 are forged pistons engineered for Chevy small block (SBC) 383 cubic inch engine builds. Featuring a flat-top design with a 6.0" rod length, 4.060" bore diameter, and 2.5mm ring grooves, these pistons deliver reliable performance in high-demand racing and street engine applications. The forged construction provides superior strength and durability compared to cast alternatives, making them ideal for turbocharged, supercharged, or high-RPM applications where engine stress is elevated.

These pistons are precision-manufactured to exacting tolerances, ensuring proper fitment and function in your SBC 383 engine. The 1.100" top land height and 0.927" pin diameter specifications allow for compatibility with standard SBC connecting rods and internal engine components. Whether you're building a classic hot rod, street machine, or competition engine, the Speedmaster forged piston design minimizes flex and wear, extending engine life and maintaining consistent performance. Ideal for builders seeking reliable, cost-effective pistons for their small block Chevy rebuild or upgrade project.

Key Features & Benefits

• Forged Construction: Forged alloy pistons offer superior strength and durability for high-RPM and boost-induced stress.
• Flat Top Design: Optimized piston crown for reliable combustion and clearance in standard SBC cylinder heads.
• Precision Tolerances: 6.0" rod length, 4.060" bore, 1.100" top land, and 0.927" pin diameter for exact fitment.
• 2.5mm Ring Grooves: Specification supports standard compression ring configurations for small block Chevy engines.
• SBC 383 cu in Specific: Engineered specifically for 383 cubic inch displacement small block Chevy engine builds.

Specifications

Ideal Applications

• High-RPM small block Chevy 383 engine builds and rebuilds
• Turbocharged or supercharged SBC applications
• Street rod and hot rod engine projects
• Competition and racing engine configurations