MANLEY VALVE SPRING KIT

Manley, valve spring kit. Std to .490" lift

Incl. steel top collars and dual spring style valve springs. No machining required for installation. 20% more pressure than stock and suitable for stock to .490" lift applications. Valve springs have an interference fit to reduce harmonics and control spring surge. Pressure: 85lbs@1.310", 295lbs@.820". Coil bind: .790".

Fits: > 57-85 XL (NU)