whathappens if i put hi-lift springs to a low lift cam
 

as a result of having not too many measurement equipment like spring tester etc.i am a bit confused.i am upgrading the cylinder heads to darts.dont know nothing about the springs but the man who sold me says darts are designed for rollers....
my cam is smaller i mean has 550 lift.what can happen if i put this cam under those(if they are) hi-tension springs?

it will prematurely wear the cam lobes and quick,life depends on how high you run the rpms,but will tear the cam up!