340 race motor want to see what cam is in it

need help on this one bought a motor has a roller cam in it [no cam card] some one stole the springs ,retainers ,push rods etc off the heads before i bought it. the motor was built in a shop but dont know who question can i take the timing chain and gear off the cam [ so i can see kind and cam part #] to buy the correct spring with out messing up the cam degree ? thanks