20-22450 Steel, 0.415" Lift, HD® Shovelhead 74", 1966-1977

KPMI® complete Valve Spring Kit that meets or exceeds OEM specifications Seals (where applicable) Keeper (where applicable) KPMI® S.S. Black Diamond™ Valves, Stock Head Dia. Type Intake/ Exhaust Retainer Material H.T. Steel Valve Lift 0.415" Installed Height 1.375" Seat Pressure 129# Open Pressure #272 @ Lift 0.415" Valve Type Intake / Exhaust Valve Material Black Diamond™ Stainless Coating Black Nitroneg Intake Head Diameter 49.53mm / 1.950" Intake Stem Diameter 9.6mm / 0.3765" Intake Tulip 23° Intake Overall Length 3.885” Exhaust Head Diameter 44.45mm / 1.750” Exhaust Stem Diameter 9.6mm / 0.3760" Exhaust Tulip 29° Exhaust Overall Length 3.810" Remarks Standard Note The basewasher is counterbored to fit a 0.665” outside diameter seal.