.660" Polished Dual Spring Kit

The Texas Speed & Performance .660" POLISHED Dual Spring Kit represents the latest advancement in dual valve spring technology. It features American-Made PAC Racing polished dual valve springs, rated to .660" lift, which are designed to increase overall spring life and reduce the chances of fatigue and failure. The polished finish is achieved without compromising spring pressure. Included in this kit are lightweight titanium retainers and the innovative patent-pending Precision Race Components integrated seat and seal. This integrated design eliminates the need for special installation tools for valve seals, preventing issues like tearing or seals popping off during installation. However, they cannot be used on any aftermarket bronze guide applications. The kit provides robust specifications for performance, including an install height of 1.810" with 160 lb. of closed spring pressure. At its maximum lift of .660", the springs deliver 415 lb. of open pressure, with a coil bind height of 1.015". This ensures stability and durability for high-revving engines. Please note that this dual valve spring kit utilizes GM factory valve stem locks, which are not included and must be sourced separately.