The ports and chambers in our Pro 1 Ford cylinder heads have been designed using Dart's sophisticated wet flow technology for superior fuel atomization and air flow characteristics. Standard valve angle and spacing is retained for bolt on compatibility.

Features:
- Premium alloy: Dart aluminum heads are cast from virgin 355-T61 aerospace alloy for superior strength and integrity.

- Bolt on compatibility: Standard valve angle and standard spacing accommodates all stock accessories.

- Heart shaped chambers improve combustion efficiency.

- Exhaust runners are raised .135" for improved flow.

- Multi-angle intake seats and radiused exhaust seats improve flow efficiency.

- Hardened exhaust seats are compatible with unleaded gasoline.

- Exhaust flange uses the standard bolt pattern.

- Manganese bronze valve guides ensure long term reliability.

- All cylinder heads sold individually.