Carrillo BC1250-030 Small Block Chevy Piston Set Bore Rod - 4.155 5.700

The Carrillo BC1250-030 is a precision-engineered piston set designed specifically for Small Block Chevy engines. These high-performance pistons feature a dome top design with +5cc volume, engineered to deliver optimal compression ratios for serious engine builders.

Key Specifications:

• Bore diameter: 4.155 inches
• Stroke: 3.750 inches
• Rod length: 5.700 inches
• Compression ratio: 12.8:1 with 64cc cylinder head
• Dome design: +5cc volume
• Compatibility: All 23-degree cylinder heads

Carrillo pistons are manufactured to exacting tolerances using premium materials and advanced CNC machining processes. The dome configuration provides increased compression for enhanced power output while maintaining compatibility with modern fuel quality. These pistons are ideal for high-performance street engines, drag racing applications, and other demanding builds requiring precise compression control.

When paired with 64cc cylinder heads, this piston set achieves a 12.8:1 compression ratio, making it suitable for race fuel or high-octane applications. The design is optimized for engines using 23-degree valve angle cylinder heads, ensuring proper valve-to-piston clearance and combustion chamber geometry.