The cylinder head is made of a light, strong aluminum alloy with great cooling effectiveness. Camshafts are created of specially Solid steel and therefore are driven by a timing belt. The 2JZ-GTE motor is supplied with 4 valves for each cylinder: two ingestion valves and two exhaust valves. Contacted vendor https://dallasxvtqk.techionblog.com/28138980/not-known-factual-statements-about-jdm-toyota-2jz-gte-vvti-for-sale-built-2jz-gte