Speedmaster SBC 383ci 5.7" Flat Top Forged Pistons PCE305.1010.03 – 4.030" Bore

The Speedmaster PCE305.1010.03 is a premium forged piston set engineered for Chevy SBC 383 cubic inch engines. Featuring a flat-top design, these pistons deliver robust durability and precise bore fit (4.030") for high-performance street and racing applications. Built from forged material for superior strength and heat resistance, they are ideal for engine builders seeking reliable, performance-grade internal components.

These pistons are designed to work with 5.7" stroke applications and feature the specifications needed for SBC 383 builds. The flat-top profile optimizes combustion chamber design, making them suitable for custom engine assembly, performance restoration, and competition engine work. Speedmaster's precision manufacturing ensures consistent quality across the set for reliable long-term operation.

Key Features & Benefits

• Forged Construction: Heavy-duty forged material provides superior strength and heat resistance for high-performance engine duty.
• Flat-Top Design: Optimized combustion chamber profile for efficient power delivery in SBC 383 applications.
• Precision Bore Fit: 4.030" bore diameter engineered to exact specifications for proper ring seal and piston clearance.
• SBC 383ci Compatible: Purpose-built for Chevy small-block 383 cubic inch engines with 5.7" stroke configuration.
• Performance Grade: Manufactured to exacting standards suitable for street performance and racing environments.

Specifications

Ideal Applications

• Custom SBC 383 engine builds and restorations
• High-performance street engine assemblies
• Competition and racing engine applications
• Engine rebuilds requiring precision OEM-fit internals