Manley Performance
Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8
Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...