Heavy duty double valve springs for use with Crane or CC Spring Retainers.
These are suitable for most applications but not for over 6500 rpm. For Race springs please contact.
For fitting of inner springs - the valve guide boss may require machining inorder to allow the inner spring to sit at the same level as the outer spring.
Spring installed height is 1.54"
Pressure 75 Lbs @ 1.54"
Pressure @ 1.04" 200 lbs