Manton 6.7L Powerstroke Ford Conical Valve Springs 2011-Present year
New Conical Valve Spring for the Ford 6.7L Powerstroke . Designed to allow for increased Lift and Boost while providing better total valve control. Sold as a set of 32.
Specs:
133LBS @ 1.333 installed height
183LBS @ .965 (.368 Valve Lift)
Max Valve Lift Accommodation of .420 if installed at 1.333
Please Note: Manton Offers our heat-treated spring shims in various thicknesses to adjust seat pressure if needed to accommodate any max boost you may be seeing.