These COMP Cams beehive valve springs with 0.650 in maximum lift suit Ford 3-valve and other Modular applications including some Duramax engines. The beehive profile cuts spring weight, improves heat dissipation via oval multi-arc wire, and reduces damaging harmonics to increase high-RPM stability and cam compatibility. Reference dimensions: top OD 1.013 in, top ID 0.650 in; bottom OD 1.101 in, bottom ID 0.738 in.
COMP Cams Valve Springs H/L Ford 3V Bee