Im guessing your following the post regarding GMC rocker ratio. Finding or getting a set of roller rockers made that has all (12)rocker with the same ratio will be a good start to maximize your current camshaft. Since most production rocker arms are made with a "theoretical" ratio of some amount, they are only cast, and usually they are all (12) different to the specified ratio, so you don't really get the most potential you can get out of your camshaft. Changing cams, but not changing to better rockers will also make you fall into the same pitfall again. You can also play with your current camshaft by advancing it to see if you have any gain left in it to further tweak this profile before moving on to another one, after you get better rockers of course.
