Ford Raptor Valve Springs
Ford Gen 2 3.5 litre V6 Ecoboost.
High performance, progressively wound PACALOYtm beehive valve spring.
This kit was engineered to go with high performance camshaft upgrades and high boost applications.
90lb seat pressure @ 43.0mm Installed height / 246lb @ 13mm lift / Coil bind is at 25.0mm