Product description
Fleece Performance’s all‑new Freedom Series HD Cylinder Heads for the 2003–2007 6.0L Ford Power Stroke deliver a premium, durability‑focused upgrade built on a brand‑new, higher‑tensile‑strength casting engineered from the ground up for long‑term reliability. Manufactured in their state‑of‑the‑art Freedom Racing Engine shop, each head comes fully assembled with hardened oversized press‑in valve seats, new valve guides, springs, stainless steel/Inconel valves, retainers, and valve seals. Fleece’s exclusive single‑piece O‑ring design ensures superior combustion sealing compared to traditional seamed stainless wire, providing exceptional performance for daily drivers, heavy‑duty tow rigs, and work trucks that demand maximum uptime. With no core charge and no core return required, these Freedom Series HD heads offer a true drop‑in solution that meets or exceeds factory specifications while delivering unmatched strength, longevity, and reliability.
Application Notes
- All 20mm dowel heads are configured for 2-bolt rocker box configurations.
- Fleece Performance recommends the use of 6.4L pushrods (Ford Part No. 8C3Z-6565-B) when installing these cylinder heads. 6.4L pushrods are 0.050†shorter in length vs. a 6.0L pushrod and will accommodate the tolerance stack ups that can be encountered with a replacement cylinder head.
- Head gasket not included. We recommend the use of Ford Part No.KZ3Z-6051-B.