We designed Iron Eagle big-block marine heads for high-performance marine applications and outfitted them with Inconel exhaust valves to withstand the extended running time and temperatures typical of marine usage.

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

- Precision combustion chambers for optimal burn control.

- Inconel exhaust valves for increased durability at high temperatures.

- 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.

- All cylinder heads sold individually.