Additional information
Outer Diameter: 1.570 in
Outer Inner Diameter: 1.120 in
Outer Damper: No
Inner Diameter: 0.780 in
Installed Height (Valve Closed): 1.950 in
Seat Pressure @ 1.950 in: 190 lbs
Open Pressure @ 1.250 in: 710 lbs
Spring Rate: 743 lb/in
Max Valve Lift: 0.800 in
Coil Bind Height: 1.055 in
Recommended components:
Retainers (PAC 500 Series): R551
Spring Seats: S103, S104
Application notes:
High rate and high frequency spring for roller camshaft applications.
racingsprings.com
Vendor Part Number: PAC-1244
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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