do i really need valve springs? need help quick

[slow3gt]

right now im in the process of installing my cams they are comp custom grind the lift is .545, duration is 226/230 when i bought the cams my shop said that i should get springs so i did but ive been comparing the numbers and they are similar to a stage one which shouldnt need springs i would like know if i should install them or not it will save me alot of trouble plus i can take them back

 

[Red2000GT]

It's not worth risking floating the valves and doing major damage to the engine. I thought any cam with more than .500 lift should have new springs,and with that duration I'd not risk it.