High-performance LS engine valve spring set .660 TSP

This is a professional valve spring set from TSP designed to withstand high-performance camshafts in LS engines, ensuring higher stability at high RPM with reduced chances of spring damage or performance loss. Ideal for users installing a modified camshaft and seeking reliable performance and longer engine life. Features * Supports Lift up to 0.660 * Stable performance at high RPM * Improves engine response * Suitable for high-performance projects * High manufacturing quality (PAC Racing) Specifications * Maximum Lift: 0.660 * Closed pressure: 160 lb * Open pressure: 415 lb * Coil Bind: 1.015 Important notes * Does not work with engines: * LS7 / LS9 * LT1 / LT4 (Gen V) * Preferably used with a modified camshaft