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PAC Racing 1200 Series Drag Race Valve Springs PAC-1228-16
Part Number: RSC-PAC-1228-16
PAC Racing 1200 Series Drag Race Valve Springs
Valve Springs, 1200 Series Drag Race, Dual, 1.625 in. O.D., 629 lbs./in. Rate, 1.100 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-1228-16
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-1228-16
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.900 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.625 in.
Coil Bind Height (in.):
1.100 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
629 lbs./in.
Inside Diameter of Outer Spring (in.):
1.175 in.
Inside Diameter of Inner Spring (in.):
0.851 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Quantity:
Sold as a set of 16.
Installed Height (in.):
2.100 in.
Seat Pressure at Installed Height (lbs.):
280 lbs.
Open Height (in.)(application):
1.150
Open Pressure (lbs.):
847 lbs.
Remanufactured:
No
PAC Racing 1200 Series Drag Race Valve Springs
PAC Racing 1200 Series drag race valve springs are great for allowing you to get the most performance out of your engine. 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 perform during the most demanding times.
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