1. what so you look for in a blower cam? (lift, duration etc)

2. are different cams better for certain boost levels?

3. would upgrading cams make a big difference by as a stand alone mod or would it be better to upgrade heads as well?

4. how much hp gain should I expect from a cam upgrade while running around 8 psi?

 

Think I've heard as much 30+ horsepower from blower cams upgrades, well for every application you have to look for lift, duration, seperation etc. so thats kinda an very open ended question. I'd say your best bet is to, go to different web sites and look at the different specifications for each place and each blower cam stage they sell. Then you could get an idea of what kind of lift, duration etc. most people are using with there blower setups.