Speedmaster PCE305.1130 Chevy SBC 383 ci Forged Flat Top Pistons 6.0" 4.040" Bore 2.5mm

The Speedmaster PCE305.1130 is a set of forged flat top pistons engineered for Chevy small-block (SBC) 383 cubic inch stroker engines. Designed with a 4.040" bore diameter, 6.0" rod length, 1.100" pin diameter, and 0.927" pin offset, these pistons deliver reliable performance in high-horsepower applications where durability and precision are essential. The forged construction provides superior strength compared to cast alternatives, while the flat top design optimizes combustion chamber geometry for efficient power delivery.

These pistons feature 2.5mm ring grooves and are sized to exact specifications for proper fitment in SBC 383 builds. Whether you're rebuilding a performance street engine or a weekend racer, the Speedmaster forged design offers the hardness and fatigue resistance needed for sustained high RPM operation. The precise dimensional tolerances ensure consistent compression and ring seal, reducing blow-by and extending engine longevity in demanding conditions.

Key Features & Benefits

• Forged Construction: Forged steel pistons offer superior strength and fatigue resistance compared to cast options, ideal for high-RPM performance engines.
• Flat Top Design: Optimized piston crown geometry for efficient combustion and power delivery in stroker applications.
• SBC 383 Specific: Engineered for Chevy small-block 383 cubic inch stroker engines with exact bore, rod length, and pin specifications.
• 2.5mm Ring Grooves: Precision ring groove sizing for proper ring fit, seal, and reduced blow-by.
• Precision Tolerances: Tight dimensional control ensures consistent fitment and compression across the piston set.

Specifications

Ideal Applications

• High-performance stroker engine rebuilds for street and race applications
• 383 cubic inch Chevy small-block engine restorations and upgrades
• Weekend racing and competitive engine builds
• Performance machine shop engine assembly and reconditioning