We were first to market with a conical valve spring kit for Gen V LT4s. Big whoop, right? WRONG. Weight is the enemy of a proper functioning valvetrain. If your cam isn't too radical, a dual spring kit isn't required. These springs will vastly improve valvetrain stability at high RPM while still supporting up to .650" lift. Made right here in the good ole US of A, this kit includes springs, locators, and retainers. LT1/L86 engines require SK013.
160 LB SEAT @ 1.875" INSTALL HEIGHT
395 LB OPEN @ 1.225"
COIL BIND @ 1.165"