Dart's Iron Eagle Pro cylinder heads for big block Chevy engines offer an array of features for racers and street performance enthusiasts. High efficiency chambers, raised exhaust ports, multi-angle intake seats and radiused exhaust seats are coupled with a complete CNC machining treatment to make a truly high performance head.

Features:
- Valve angles rolled two degrees from stock to reduce chamber volume and improve flow.

- Precision machined combustion chambers for optimal burn control.

- 100% CNC machined intake runners and exhaust ports create consistency and excellent air/fuel flow.

- Multi-angle intake seats, radiused exhaust seats and precision cast valve bowls produce excellent air flow without hand porting or expensive CNC machining.

- Exhaust ports raised .300 to improve flow.

- Manganese bronze intake valve guides ensure long term reliability.

- As cast heads are bowl blended on 5-axis CNC machining centers.

- All cylinder heads sold individually.