I picked up an LT4 last week. It is said that only the stock cam and the hotcam can work with the stock LT4 rockers torque to yield bolts like the Buick 3800s ( no valve lash setting reqd). But maybe my understanding is off. Does anyone know the answer? Hotcams used to be given away, now only $900 kits have them. Id love to hear of a cam like the 227 being able to work.