Circle Track Valve Springs
PAC offers three series of dual-spring valve spring assemblies for circle track racing applications. The economical 1200 series is standard HP-processed with good fatigue life. 1300 series Nano Peen springs have surface enhancements and full chamfering for extreme reliability. Premium 1500 series are polished, gold-colored Nano Peen springs engineered for extreme engine speeds and radical camshaft profiles. Sold in sets of 16.
- Valve Spring Style:
- Standard
- Number of Springs Per Valve:
- Dual
- O.D. Outer Spring (in.):
- 1.510 in.
- Coil Bind Height (in.):
- 1.185 in.
- Damper Spring Included:
- No
- Spring Rate (lbs/in.):
- 494 lbs./in.
- I.D. of Outer Spring (in.):
- 1.086 in.
- I.D. of Inner Spring (in.):
- 0.790 in.
- Valve Springs Coated:
- No
- Maximum Valve Lift (in.):
- 0.780 in.
- Retainers Included:
- No
- Retainer Material:
- N/A
- Locks Included:
- No
- Lock Material:
- N/A
- Valve Stem Seals Included:
- No
- Installed Height:
- 230 lbs. @ 2.050 in.
- Open Height:
- 625 lbs. @ 1.250 in.
- Quantity:
- Sold as a set of 16.
