Emissions Warning
Products sold on this website may not be legal for use on public roads or highways due to Environmental Protection Agency (EPA) restrictions or California Air Resources Board (CARB) emissions regulations. Federal and State regulations may restrict Product installation to pre-emissions regulation (Model Year 1974 or earlier) or to competition/racing vehicles used exclusively in
1) events organized by recognized bodies, authorizing permits for participating drivers.
2) racing event qualification, and3) practice associated with events.
Installation of such products, including driving racing vehicles to and from the track, may be considered illegal “tampering ” or as “defeat device”, and may result in federal and state penalties. It is the purchaser’s responsibility to ensure compliance with all applicable emissions laws, including California’s stricter standards.
Proposition 65 Warning:
This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
- Valve Spring Style:
- Standard
- Number of Springs Per Valve:
- Dual
- O.D. Outer Spring (in.):
- 1.305 in.
- Coil Bind Height (in.):
- 1.070 in.
- Damper Spring Included:
- No
- Spring Rate (lbs/in.):
- 378 lbs./in.
- I.D. of Outer Spring (in.):
- N/A
- I.D. of Inner Spring (in.):
- 0.670 in.
- Valve Springs Coated:
- No
- Maximum Valve Lift (in.):
- 0.660 in.
- Retainers Included:
- Yes
- Retainer Material:
- Titanium
- Locks Included:
- Yes
- Lock Material:
- Steel
- Valve Stem Seals Included:
- Yes
- Installed Height:
- 160 lbs. @ 1.780 in.
- Open Height:
- 417 lbs. @ 1.15 in.
- Lock Groove Quantity:
- 1-groove
- Lock Style:
- 7 degree
- Valve Stem Diameter (in.):
- 0.315 in.
- Valve Stem Diameter (mm):
- 8.00mm
- Quantity:
- Sold as a kit.
- Notes:
- Kit includes spring seats.
- Make:
- Chevrolet
- Engine Family:
- Chevy small block Gen III/IV (LS-based engines)
- Engine Size:
- 4.8L/294-7.0L/427
- Years:
- 1997-2019
