BBC 345cc Pro-1 Head 121cc R/P 2.30/1.88 Bare

The BBC 345cc Pro-1 Head 121cc R/P 2.30/1.88 Bare from DART is an essential component for big-block Chevy enthusiasts focused on high-performance engine building. This product serves as a robust foundation for both street and competition applications, allowing builders to optimize displacement and enhance cylinder-head performance.

Engineered with a 345cc intake-port volume and a compact 121cc combustion chamber, this bare casting is designed to balance mid-range torque with high-RPM airflow capability. The specifications include a 2.30-inch intake valve and a 1.88-inch exhaust valve, providing excellent flow characteristics. The bare casting allows for complete control over valve train configuration and custom porting work.

Professional engine builders and serious DIY mechanics will appreciate the refined port matching and consistent casting quality of the DART Pro-1 head. This product is ideal for those looking to build a powerful big-block engine, whether for racing or high-performance street use.