Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC Steel retainers are CNC machined from chromoly Steel to exacting tolerances. Use steel retainer for high mileage applications.
Dual spring, Steel retainer/seat for high lift cams (BC0047/BC0047-2)
Spring Pressure: BC1040T Seat: 1.590" @ 80 lbs / Open: 1.020" @ 215 lbs / Coil Bind: .870" (no machine work required)
