More About Dart Pro 1 Marine Heads:
Features:
- Special hard chromate surface treatment for corrosion and erosion resistance -available on stainless and aluminum Dart blocks!
- Premium alloy: Dart aluminum heads are cast from virgin 355-T61 aerospace alloy for superior strength and integrity.
- Assemblies include super tough inconel exhaust valves for long life.
- Bolt on compatibility: 2 degree rolled valve angle and standard spacing. Accommodates all stock accessories.
- Heart shaped 121cc chambers improve combustion efficiency.
- Raised spark plug location improves flame travel for a quicker, more complete burn, producing more power.
- Multi-angle intake seats and radiused exhaust seats dramatically increase airflow.
- Hardened exhaust seats are compatible with unleaded gasoline.
- Exhaust ports raised .300" to improve flow (requires 1" longer head bolts next to exhaust ports).
- Spark plug holes are machined for gasketed 3/4" reach plugs.
- Manganese bronze valve guides extend cylinder head life and reduce
Dart Machinery, LTD. stands behind each product they manufacture 100%. Each component undergoes a detailed manufacturing process that involves the hundreds of calculated and precision steps to ensure the finest quality possible.