The Miller Performance house brand m30 performance dual valve spring and retainer kit offers excellent performance and reliability for a high lift cam for your M30b34 or M30b35 engine. Any cam that provides you with .450" lift or higher, performance dual springs are required. Our Dual spring package comes with the inner and outer springs, seats and retainers.
|VALVE SPRINGS||Pressure (lbs)||Max Net lift|
|Seat||Full Lift (.460")||Inches / mm|
|MP-MPV-030||85 lbs||225 lbs||.470" / 11.93|