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Make/Engine
Maximum Valve Lift (in.)
- 0.640 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 0.660 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Seat Pressure at Installed Height (lbs.)
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Coil Bind Height (in.)
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- 1.100 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Open Pressure (lbs.)
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- 413 lbs. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Spring Rate (lbs./in.)
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- 405 lbs./in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Inside Diameter of Outer Spring (in.)
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- 0.955 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Inside Diameter of Inner Spring (in.)
- 0.665 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 0.676 in. (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
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- Made In USA (1)

Howards Cams LS Dual Valve Spring Kits

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Howards Cams LS dual valve spring kits are coiled, heat-treated, and finished specifically for LS performance applications. These dual valve spring kits are designed as high performance upgrades for increased rev control with better valvetrain stability. Howards Cams LS dual valve spring kits include dual springs, chromoly retainers, heat-treated valve locks, and small O.D. seals. Get American-made quality and value from Howards Cams.

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