Carrillo BC1040-040 SBC Dome Piston Set 4.040 Bore 6.000 Rod 11.4:1 Compression

The Carrillo BC1040-040 is a high-performance dome piston set engineered specifically for Small Block Chevy applications with 23-degree cylinder heads. These precision-machined pistons are designed to deliver maximum power and durability in demanding racing and high-performance street applications.

Key Specifications:

• Bore Size: 4.040 inches
• Stroke: 3.500 inches
• Rod Length: 6.000 inches
• Dome Volume: +5cc (adds compression)
• Compression Ratio: 11.4:1 (with 64cc combustion chamber)
• Head Compatibility: All 23-degree heads

Carrillo pistons are manufactured from high-strength aluminum alloy and feature precision dome profiles optimized for efficient combustion and power delivery. The +5cc dome configuration increases compression ratio, making these pistons ideal for naturally aspirated racing engines running on race fuel. The 11.4:1 compression ratio is calculated based on pairing with 64cc cylinder heads, though compatibility with all 23-degree head designs provides flexibility for various builds.

These pistons are designed to work with 6.000-inch connecting rods and a 3.500-inch stroke crankshaft, creating a proven combination for Small Block Chevy performance applications. The 4.040-inch bore size represents a standard overbore for SBC blocks, providing increased displacement while maintaining adequate cylinder wall thickness.