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PAC Racing RPM Series Valve Springs
Valve Springs, RPM Series, Dual, 1.324 in. O.D., 500 lbs./in. Rate, 1.000 in. Coil Bind Height, Set of 16
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Estimated Ship Date: Monday 10/19/2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
PAC-1209X-16
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-1209X-16
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.750 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.324 in.
Coil Bind Height (in.):
1.000 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
500 lbs./in.
Inside Diameter of Outer Spring (in.):
0.950 in.
Inside Diameter of Inner Spring (in.):
0.680 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold as a set of 16.
Make:
CHEVROLET
Engine Family:
Chevy small block Gen III/IV (LS-based engines)
Installed Height (in.):
1.800 in.
Seat Pressure at Installed Height (lbs.):
160 lbs.
Open Height (in.)(application):
1.100
Open Pressure (lbs.):
510 lbs.
Remanufactured:
No
PAC Racing RPM Series Valve Springs
PAC Racing RPM Series valve springs were developed using all of the latest advancements from Circle Track and drag racing successes. This valuable, real-life research has been applied to new designs, which allow for performance increases that exceed all demands. RPM springs are made from quality materials and are available in different diameters and pressures to suit your specific camshaft profile.
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