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PAC Racing 1200 Series Valve Springs
Valve Springs, 1200 Series, Dual, 1.550 in. O.D., 663 lbs./in. Rate, 1.150 in. Coil Bind Height, Each
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Estimated Ship Date: Dec 14, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
PAC-1226
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-1226
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.800 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.550 in.
Coil Bind Height (in.):
1.150 in.
Damper Spring Included:
Yes
Spring Rate (lbs./in.):
663 lbs./in.
Inside Diameter of Outer Spring (in.):
1.100 in.
Inside Diameter of Inner Spring (in.):
0.706 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold individually.
Installed Height (in.):
2.000 in.
Seat Pressure at Installed Height (lbs.):
275 lbs.
Open Height (in.)(application):
1.200
Open Pressure (lbs.):
805 lbs.
Remanufactured:
No
PAC Racing 1200 Series Valve Springs
PAC Racing 1200 Series valve springs are great as replacement parts--or for pushing above and beyond the performance of OEM engines. Select them when you're upgrading camshafts or doing engine rebuilds. The 1200 Series use a premium alloy that outperforms automotive industry standards; and PAC Racing processes the alloy to aerospace shot-peening standards to achieve superior fatigue dependability. This ensures that the springs maintain the load needed to withstand rigors of both street and mild racing applications.
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