Valve spring pressures

[rcottick]

ok guys I just ordered the racer brown cam today but I need to check my spring pressures. How do I do this and can it be done on the motor without taking it apart. is there a tool that I can buy to do this?

Thanks
Ron

 

[340sixpack]

Can be done on motor.
http://www.jegs.com/p/moroso/747377/10002/-1/10709