308cc – Street and marine performance, mild bracket racing. Under 7,000 RPM, under 500 cubic inches excellent mid-range torque and power, good for heavier vehicles.  345cc – Maximum street or marine performance, bracket racing, heads up and super classes. Over 7,000 RPM, 540+ cubic inches.

Dart Iron Eagle 24° heads are an affordable alternative to more expensive Aluminum heads.  High velocity runners produce incredible torque and power.

Long wearing Bronze valve guides, screw-in studs, multi-angle intake seats and hardened and radiused exhaust seats are standard.  Best of all, our precision cast ports produce outstanding airflow without time consuming porting.

Assemblies include Stainless Steel valves, premium springs, locks, retainers, guide plates and seals.

Heads are sold individually.