Edelbrock Cylinder Head BBC Pro-Port Victor High Port Conventional Dr-17 Hip CNC -PortedThe Edelbrock 614 Big Block Chevy 24 Deg Pro Port Cylinder head is designed specifically for the professional cylinder head porter and engine builder. Like all other Edelbrock Cylinder heads, Pro Port cylinder heads are also cast in the USA at the state of the art Edelbrock Foundry with extra thick walls to allow for custom CNC porting. In most cases, seats and manganese bronze valve guides are included, but not installed. Please note: These heads can