Cosworth designed its own aluminium reverse-flow 2-valve gear-driven SOHC cylinder head for the same Ford 116E block. This head shared many basic design attributes with the Coventry Climax FWE head and was used with a short-stroke forged steel crank for a 1 Liter Formula 2 engine named the SCA in 1964. This was followed by a gear-driven DOHC 4-valve cross-flow aluminium head on the same block with a Mk.XIII forged crank for a new 1.6 Liter Formula 2 engine named the FVA in 1966. This is when Cosworth's involvement in the development of the Lotus TwinCam ended.