absolutely. a cam will be the biggest n/a power adding component you can add. the gm factory used a small, fuel efficient, emissions friendly cam that has absolutely excellent street manners. there is a lot of power to be gained as the cam is the "heart/brains" of the mechanical process of the motor. if you wanted an upgrade, i would look at a TR224 for an all around, proven, reliable, and common camshaft. much more than that on a stockish motor would begin to degrade driveability. if you want more than that, get ahold of patrick G on this forum, and pay him 25 bucks to get a custom cam specc'ed out for your motor. there are too many variables, from what you want to how your motor is built to give you your "best" cam. you can also call any major camshaft manufacturer and most will walk you through what you have done to your car and what you want it to do and can give you a camshaft reccomendation based on that. of course, heads will help but your stocker ls1 heads flow remarkably well compared to any old school smallblock set of heads out there. there is power to be gained with heads and i would reccomend it when you can. remember, if you change your heads, then the camshaft may have to be changed yet again to get the motor to perform at its optimum level. its all a package that works together. the best cam for your car with stock heads is different than the best cam for your car with modified heads.
Nine-Eight