Rudy's High Rev Performance Valve Springs

Rudy's Diesel Powerstroke springs were manufactured in the U.S.A. for the 6.0l/6.4l engine only! If you are running more rpm, boost or a higher lift cam than factory, then these springs will help you control your valves. By controlling your valves you will effectively eliminate valve float(when the valve is not in contact with the rocker) which allows the valve to hammer the seat, or reversion that can occur when exhaust drive pressures open the exhaust valve on the intake stroke.