Additional information
Installed Height (Valve Closed): 1.800 in
Seat Pressure @ 1.800 in: 160 lbs
Open Pressure @ 1.125 in: 425 lbs
Spring Rate: 392 lb/in
Max Valve Lift: 0.650 in
Coil Bind Height: 1.020 in
Included components:
Valve Springs: PAC-1905
Retainers: R335 (Chrome Moly)
Spring Seats: S129
Locks: OE
Valve Seals: Included
Application notes:
LS engine dual valve spring kit with chrome moly retainers.
racingsprings.com
Vendor Part Number: PAC-KS12
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