Valve Spring

Free Length (Approximately) 48.5 mm (1.909 inch)
Wire Diameter 4.75 mm (0.187 inch)
Number of Calls 6.8
Spring Tension (Valve Closed) 95-100 lbs. @ 1.57 inch
Spring Tension (Valve Open) 207-229 lbs. @ 1.169 inch
Installed Height (Spring Seat to Bottom of Retainer) 41.2-42.7 mm (1.622-1.681 inch)