Speedmaster PCE305.1005.05 SBC 383 Flat Top Hyper Pistons, Coated, 6.0" Rod Length 4.060" Bore

The Speedmaster PCE305.1005.05 is a set of SBC 383 cubic inch flat top hyper pistons engineered for high-performance small block Chevy engines. These pistons feature a coated finish that enhances durability and heat dissipation, making them ideal for street and strip applications where reliability and consistent power delivery are critical. With precise dimensions of 6.0" rod length, 4.060" bore, and a flat top design, they deliver optimized compression and combustion chamber geometry for the 383 cubic inch displacement.

These hyper pistons are designed for builders who demand superior performance in their small block Chevy builds. The flat top crown promotes efficient fuel burn and stable detonation characteristics, while the coated surface treatment protects against scuffing and extends component life. Compatible with standard SBC block configurations, they serve as a drop-in replacement for stock or performance rebuild applications in street machines, drag racing platforms, and high-output street/strip engines.

Key Features & Benefits

• Coated Finish: Protective coating enhances durability and heat management in demanding high-RPM applications.
• Flat Top Design: Optimized crown geometry improves combustion efficiency and detonation stability.
• SBC 383 ci Specific: Precision-engineered dimensions (6.0" rod, 4.060" bore) match 383 cubic inch displacement builds.
• High-Performance Grade: Hyper-rated construction supports aggressive tuning, forced induction, and competition-level boost.

Specifications

Ideal Applications

• Street and strip small block Chevy engines requiring reliable high-RPM performance
• 383 ci displacement builds for hot rods, muscle cars, and performance street machines
• Drag racing and competition platforms demanding durable, efficient combustion geometry
• Rebuild projects and performance engine swaps in classic and modern Chevy applications