Valve Spring

Compression Pressure (Lb. @ Spec. Length)
Intake and Exhaust (Installed) 57-63 @ 1.56
Intake and Exhaust:
(Valve Open) 118-132 @ 1.16
(Valve Closed) 57-63 @ 1.56
Free Length (Approximate) 2.02
Assembled Height 1.54-1.58
Service Limit 5% Pressure Loss @ Specified Length
Out of Square Service Limit 5/64 (0.078)