Intake Valve Lift 0.440" Intake Installed Height 1.215" Intake Seat Pressure 40# Intake Open Pressure 147# Intake @ Lift 0.440" Exhaust Valve Lift 0.440" Exhaust Installed Height 1.365" Exhaust Seat Pressure 70# Exhaust Open Pressure 203# Exhaust @ Lift 0.440" Note: The Exhaust springs for this kit include a progressively wound Inner Spring, which should be installed with the tightly wound end seated on the HT Steel Basewashers.
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