MANLEY Manley, high lift valve spring kit. .500″ to .650″ lift

Description

MANLEY Manley, high lift valve spring kit. .500″ to .650″ lift

66-84 Shovelhead (NU)

Includes titanium top collars, steel lower collars, valve springs and a valve key set. Machining required to lower the valve guide to avoid interference with the top collar. Special 3-spring design with interference fit to reduce harmonics and control spring surge. Springs have more pressure than stock. Pressure: 180lbs – 1.600″ / 365lbs -1.100″ / 415lbs – .950″. Coil bind: .850″