Speedmaster Chevy SBC 383 ci 6.0" Flat Top Hyper Pistons PCE305.1005.02 Coated

The Speedmaster PCE305.1005.02 is a set of flat top hyper pistons engineered for Chevy small-block (SBC) 383 cubic inch engine builds. Featuring a 6.0" length, 4.020" bore diameter, 1.100" pin diameter, and 0.927" compression height, these pistons deliver the precision geometry required for serious performance applications. The protective coating enhances durability and corrosion resistance, making them suitable for both street and competition engines seeking reliable, high-compression power delivery.

Flat top pistons are favored in performance builds because they optimize combustion chamber design and allow for tighter bore tolerances. The coated finish provides an additional layer of protection during high-heat operation, extending piston lifespan and reducing wear. These Speedmaster units are direct replacements for stock SBC 383 configurations and are ideal for engine rebuilds, performance upgrades, and racing applications where durability and thermal stability matter. Compatible with standard SBC block geometry and connecting rod assemblies rated for the specified pin diameter.

Key Features & Benefits

• Flat Top Design: Optimizes combustion chamber architecture for improved efficiency and compression characteristics in SBC 383 builds.
• Protective Coating: Enhances corrosion and heat resistance for extended component lifespan under demanding engine conditions.
• Precision Dimensions: 6.0" length, 4.020" bore, 1.100" pin diameter, and 0.927" compression height ensure exact OEM fitment and performance.
• SBC 383 Specific: Purpose-built geometry for 383 cubic inch Chevy small-block engine configurations.

Specifications

Ideal Applications

• SBC 383 engine rebuilds and long-block assembly
• High-performance street engine builds and upgrades
• Competition and racing engine configurations
• Custom engine shops and performance machine work