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.):
- 1.545 in.
- Coil Bind Height (in.):
- 1.180 in.
- Damper Spring Included:
- Yes
- Spring Rate (lbs/in.):
- 428 lbs./in.
- I.D. of Outer Spring (in.):
- 1.140 in.
- I.D. of Inner Spring (in.):
- 0.757 in.
- Valve Springs Coated:
- No
- Maximum Valve Lift (in.):
- 0.700 in.
- Retainers Included:
- No
- Retainer Material:
- N/A
- Locks Included:
- No
- Lock Material:
- N/A
- Valve Stem Seals Included:
- No
- Installed Height:
- 175 lbs. @ 1.900 in.
- Open Height:
- 442 lbs. @ 1.275 in.
- Quantity:
- Sold as a set of 16.
