camshaft help

The car hasn't been to the dyno unfortunately. I suspected the original crane hydraulic roller lifters were to blame for the performance problems, as they never seemed to hold adjustment and the performance would suffer greatly... up to 6mph in trap speed. I have replaced them with comp mechanical rollers and now the motor is coming apart again for some other repairs so I wanted to try a new camshaft while the motor was out. I don't remember what stage the head port was.. its been a couple years but it was probably a stage one street port. With the new cam I intend to go to the dyno to get some quantified shift point numbers. Thanks for the input