Chevrolet Workshop Service and Repair Manuals

Valve: Specifications
Valve Spring Pressure Specifications

Free Length ...........................................................................................................................................................................................  50.32 mm (1.981 in.)
Load Closed ..........................................................................................................................................................................................    43.69 mm (1.75 in.)
Load Open ............................................................................................................................................................................................    33.4 mm (1.315 in.)
Installed Height ................................................................................................................................................................  42.93-44.45 mm (1.690-1.720 in.)
Approximate Number of Coils ...............................................................................................................................................................................................  
4