What I like to do is install the cam "straight up" advance it two degree's and make a pass or dyno pull.
Did the car 60 foot better or worse?
Did it mph or et better or worse??
On the dyno did it change the power-band?
Did it make more hp or torque.
I keep doing this until the mph or et changes.
Same way on the dyno.
When playing with cam timing always make sure you have enough piston to valve clearance.