Trick Flow Specialties Valve Spring Upgrade Kits for Ford 4.6L/5.4L 2V Engines

Number of Springs Per Valve: Single
Valve Spring Style: Beehive
Valve Stem Diameter (in): 0.275 in.
Valve Stem Diameter (mm): 7.00mm
Retainers Included: Yes
Retainer Material: Chromoly steel
Locks Included: Yes
Lock Style: 7 degree
Lock Groove Quantity: 3-groove
Lock Material: Steel
Outside Diameter of Outer Spring (in): 1.050 in.
Coil Bind Height (in): 0.980 in.
Damper Spring Included: No
Spring Rate (lbs/in): 208 lbs./in.
Inside Diameter of Outer Spring (in): 0.750 in.
Valve Springs Coated: No
Valve Stem Seals Included: Yes
Valve Guide Diameter (in): 0.500 in.
Installed Height (in): 1.600 in.
Seat Pressure at Installed Height (lbs): 90 lbs.
Open Height (in): 1.020 in.
Open Pressure (lbs): 205 lbs.