Additional information
Outer Diameter (Bottom): 1.025 in
Inner Diameter (Bottom): 0.930 in
Outer Diameter (Top): 0.662 in
Inner Diameter (Top): 0.567 in
Installed Height (Valve Closed): 1.670 in
Seat Pressure @ 1.670 in: 105 lbs
Open Pressure @ 1.120 in: 270 lbs
Spring Rate: 300 lb/in
Coil Bind Height: 1.060 in
Max Valve Lift: 0.550 in
Recommended components:
Retainers (PAC 500 Series): R512
Application notes:
Ford 4.6L 3V drop-in spring. Requires PAC retainers.
racingsprings.com
Vendor Part Number: PAC-1233
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