In order to solve problems modular type camshafts have, that is, reducing weight, increasing oil filling time and designing multi-valve system, research was initiated about feasibility for WE (Desing for Environment) about ultralight camshaft. Through LCA (Life Cycle Assessment) and properties and process evaluation, an attempt has been made to develop cost-effectvie process for ultiralight aluminum camshaft without the problems modular type camshaft have. The results clearly show 50% weight reduction achieved and better environmental impact of the ultralight aluminum camshaft compared with that of modular camshafts.