The springs came on NIB stage 3 4v heads that I picked up for a project. The heads where never bolted to an engine and cams where never installed.
4.6L 4-Valve Modular Performance Valve Springs - Livernois Motorsports
Product Description
These springs are the only true drop-in performance springs for the 4.6L 4-valve engine.
•No added cost for special retainers, spring cups, or seals
•No machining necessary
•Designed to work with all factory hardware
•Give added spring pressure needed for most aftermarket camshafts
•Eliminate valve float to reduce the risk of any engine damage in high lift or RPM applications
Asking for $300 + shipping.
4.6L 4-Valve Modular Performance Valve Springs - Livernois Motorsports
Product Description
These springs are the only true drop-in performance springs for the 4.6L 4-valve engine.
•No added cost for special retainers, spring cups, or seals
•No machining necessary
•Designed to work with all factory hardware
•Give added spring pressure needed for most aftermarket camshafts
•Eliminate valve float to reduce the risk of any engine damage in high lift or RPM applications
Asking for $300 + shipping.
