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PAC Racing 1200 Series Valve Springs
Valve Springs, Beehive, Single, 1.307 in. O.D., 1.800 in. Installed height, 340 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-1219-16
Part Type:
Product Line:
Summit Racing Part Number:
RSC-PAC-1219-16
Valve Spring Style:
Beehive
Number of Springs Per Valve:
Single
Maximum Valve Lift (in.):
0.625 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.307 in.
Coil Bind Height (in.):
1.100 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
340 lbs./in.
Inside Diameter of Outer Spring (in.):
0.650 in./0.885 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.):
135 lbs.
Open Height (in.)(application):
1.175
Open Pressure (lbs.):
348 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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Some parts are not legal for use in California or other states with similar laws / regulations
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