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PAC Racing RPM Series Valve Springs PAC-1223X-16
Part Number: RSC-PAC1223X-16
PAC Racing RPM Series Valve Springs
VALVE SPRINGS
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Estimated Ship Date: Oct 26, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
PAC-1223X-16
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC1223X-16
Valve Spring Style:
Beehive
Number of Springs Per Valve:
Single
Maximum Valve Lift (in.):
0.500 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
0.943 in./1.105 in.
Coil Bind Height (in.):
0.900 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
324 lbs./in.
Inside Diameter of Outer Spring (in.):
0.580 in./0.742 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Remanufactured:
No
Quantity:
Sold as a set of 16.
Make:
FORD
Engine Family:
FORD MODULAR V8 GAS
Installed Height (in.):
1.470 in.
Seat Pressure at Installed Height (lbs.):
100 lbs.
Open Height (in.)(application):
0.970
Open Pressure (lbs.):
262 lbs.
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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