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Best in 7 days
Outer Diameter - Outer Valve Spring: 1.459"
Inner Diameter - Outer Valve Spring: 1.075"
Inner Diameter - Inner Valve Spring: 0.794"
Installed Height: 1.875"
Installed Load / Height (Valve Closed): 120 LB @ 1.875"
Open Height: 1.175"
Open Load: 394 PS
Open Load / Height (Valve Open): 394 LB @ 1.175"
Valve Spring Rate: 391 PS
Max Coil Bind: 1.050"
Max Valve Lift: 0.700"
Recommended Valve Spring Retainer - 300 Series: R391
Recommended Valve Spring Retainer - 400 Series: N/A
Recommended Valve Spring Retainer - 500 Series: N/A
Recommended Valve Spring Retainer - 600 Series: N/A
Recommended Valve Spring Seat: S103, S104
Recommended Valve Spring Cup: N/A
Valve Spring Series: 1900 Series
Valve Spring Type: Dual
Primary Application: Drag Race, Street Performance
