LS6 LS9 Valve Spring Kit

The Chevrolet Performance LS6 LS9 Valve Spring Kit provides a direct-fit solution for LS engine valve train upgrades. Originally featured on the 2002 405HP Z06 Corvette, these springs were engineered to manage the demands of the high-revving 5.7L LS engine and its factory high-lift camshaft. Constructed from high-tensile strength chrome silicon steel, these springs are designed as a performance upgrade over stock components, offering increased control and durability for higher RPM applications. They feature a single beehive design with specific specifications including a 90 lb @ 1.800” installed height, 295 lb @ 1.250” open pressure, a 1.160” coil bind height, and a maximum lift of 0.570". This kit is equivalent to commonly used blue LS3/6/9 springs, with a noted color variation from the manufacturer. It is considered a perfect drop-in performance valve spring for most LS applications, including GM crate circle track engines like the CT525 and 604. The set includes 16 springs.