VALVE SPRING KIT 66-E84BT .600LIFT

Progressively wound springs using Kobe super-clean, chromium silicon(CrSi) based wire that is heat treated and shot peened Made in the USA Designed for its specific application, taking into account several critical parameters including; cam profiles, harmonics, natural frequency of the springs, valvetrain mass, required pressure, wire stress, fatigue life, and engine rpm Complete set for one engine