The Speedmaster PCE305.1015.02 is a set of forged flat top pistons engineered for Chevy small-block (SBC) 383 cubic inch engine builds. These pistons feature a 6.0" stroke length, 4.020" bore diameter, 1.100" pin height, and 0.927" pin diameter, delivering the precision fitment required for reliable high-performance or street engine assembly. Flat top design maximizes combustion chamber efficiency and is ideal for naturally aspirated and boosted SBC engine applications.
Forged construction provides superior strength and durability compared to cast alternatives, making these pistons suitable for performance builds, engine rebuilds, and competition use. The exact dimensional specifications ensure compatibility with standard SBC 383 ci blocks and complementary connecting rod assemblies. Whether you're refreshing an existing engine or assembling a custom performance platform, these Speedmaster pistons deliver the quality and precision expected in professional engine building.
Key Features & Benefits
- Forged Construction: Forged steel pistons offer superior strength and durability for high-performance and heavy-duty engine builds.
- Flat Top Design: Maximizes combustion chamber volume and efficiency in naturally aspirated and boosted applications.
- SBC 383 Compatibility: Engineered specifically for Chevy small-block 383 ci engines with precise dimensional specs.
- Precision Dimensions: 6.0" stroke, 4.020" bore, 1.100" pin height, 0.927" pin diameter for exact fitment.
Specifications
| Brand | Speedmaster |
| Model/MPN | PCE305.1015.02 |
| Engine Application | Chevy SBC 383 ci |
| Piston Type | Flat Top Forged |
| Stroke | 6.0 inches |
| Bore Diameter | 4.020 inches |
| Pin Height | 1.100 inches |
| Pin Diameter | 0.927 inches |
| Construction Material | Forged Steel |
Ideal Applications
- Small-block Chevy 383 ci engine rebuilds and refreshes
- High-performance street and strip engine builds
- Competition and racing engine assembly
- Custom engine platform construction