the cam is not to big when you take out the running lash and i have had them solids roller. on the street for 20 years long time? long as you are not trying to put more than 3000 mile a year on it you will be ok i like to take them out the roller and check them at two years or 2500 miles or so. on the heads for the street smaller 180 but for hi rpm and hp the 200 you mite know this some one may not if the roller are new set them in a tray of paint thinner and then blow them out set them in 30 wt oil over nigth the gease in them when new you want out first start up with this stuff in them is no good