Additional information
Outer Diameter (Bottom): 1.031 in
Inner Diameter (Bottom): 0.849 in
Outer Diameter (Top): 0.709 in
Inner Diameter (Top): 0.527 in
Installed Height (Valve Closed): 1.811 in
Seat Pressure @ 1.811 in: 80 lbs
Open Pressure @ 1.260 in: 215 lbs
Spring Rate: 245 lb/in
Coil Bind Height: 1.208 in
Max Valve Lift: 0.551 in
Recommended components:
Retainers (PAC 400 Series): R464
Application notes:
Ford Gen 3 Coyote 5.0L valve spring for increased RPM and endurance.
racingsprings.com
Vendor Part Number: PAC-1281X
Pac Racing Catalog -24
Pac Racing Catalog -15
Always verify specifications with the manufacturer and engine builder before final assembly.
If the product is available at the Vantaa warehouse, it can be picked up or delivered—usually already within the same day.
When the product shows an estimated delivery time of 7–15 days, this is how the supplier‑warehouse order progresses.
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Check also: leveringsbetingelser