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PAC Racing - PAC-1209X - 1.324 Dual Valve Springs - RPM Series (16)

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Product description

Valve Spring - RPM Series - Dual Spring - 500 lb/in Spring Rate - 1.000 in Coil Bind - 1.324 in OD - GM LS-Series - Set of 16

Additional information
Outer Diameter: 1.324 in
Inner Diameter (Outer): 0.950 in
Inner Diameter (Inner): 0.680 in
Installed Height (Valve Closed): 1.800 in
Seat Pressure @ 1.800 in: 160 lbs
Open Pressure @ 1.100 in: 510 lbs
Spring Rate: 500 lb/in
Max Valve Lift: 0.750 in
Coil Bind Height: 1.000 in

Recommended components:
Retainers (PAC 300 Series): R335
Retainers (PAC 400 Series): R435, R450
Retainers (PAC 500 Series): R550
Retainers (PAC 600 Series): R635, R650
Spring Seats: S129, S135, S136

Application notes:
LS engine applications.

racingsprings.com

Vendor Part Number: PAC-1209X

Pac Racing Catalog -24
Pac Racing Catalog -15

Always verify specifications with the manufacturer and engine builder before final assembly.

The approximate size of the packed product or the sales package is 103 x 92 x 392 mm.

Engine
Chevy LS

Spring Type
Dual

Weight
1,8 kg(The product may have a light retail packaging.)

Availability
The product is currently not in stock at our warehouse. Available from our supplier. Estimated arrival at our warehouse 7 - 15 days from order, at the earliest 22.9.2026.

Delivery time?

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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