I put a jackson racing supercharger on my SOHC ZC? How much better performance should I expect?

 

alot better im pretty sure you get a 60+ hp gain

 

Supposodly it gives you a %40 gain but thats what JR says. If you want real power I would suggest turbo. With the turbos being made today, turbo lag is virtually gone (as long as you use the right turbo for you app.). So the "Instant boost" advantage of an SC doesnt carry much weight anymore. But it does win in reliability. Whatever you do... tune, tune, tune.