Professional Valve Springs are made of chrome silicon material and designed for low stress and long service life
- Valve Spring Style:
- Standard
- Number of Springs Per Valve:
- Dual
- O.D. Outer Spring (in.):
- 1.437 in.
- Coil Bind Height (in.):
- 1.085 in.
- Damper Spring Included:
- Yes
- Spring Rate (lbs/in.):
- 391 lbs./in.
- I.D. of Outer Spring (in.):
- N/A
- I.D. of Inner Spring (in.):
- 0.720 in.
- Valve Springs Coated:
- No
- Maximum Valve Lift (in.):
- N/A
- Retainers Included:
- No
- Retainer Material:
- N/A
- Locks Included:
- No
- Lock Material:
- N/A
- Valve Stem Seals Included:
- No
- Installed Height:
- 135 lbs. @ 1.800 in.
- Open Height:
- 350 lbs. @ 1.250 in.
- Quantity:
- Sold as a set of 16.
- Make:
- Chevrolet
- Engine Family:
- Chevy big block Mark IV
- Engine Sizes:
- 6.5L/396-7.4L/454
- Years:
- 1965-1990
- Engine Family:
- Chevy small block Gen I
- Engine Sizes:
- 4.3L/262-6.6L/400
- Years:
- 1955-2002
