Ford X.Flow chambered race head. Head was originally modified by us and just been overhauled. New double springs with heights set. New steel caps and seals. Valves all good and lapped. Inlet 1.63" Ex. 1.375" All 4 faces machined. New stainless steel core plug. Chamber volume is 24.2cc Head is more than capable of 100hp per litre on 1.3 - 1.5 engines with supporting mods.