Originally Posted by 1slow370

because that shaft is 10 mother bitches to take apart and get back together to get the output cam pieces off. then you need to find a shop that will design a fixture to grind the things, and then you need shops that are willing to do this work for people because no one is going to want to take that shaft apart themselves, and then because you would have reground a different profile on it you would need longer valves/thicker lifters to make up the clearances, and at the end of the day its going to cost 2-3x more than an hr head swap and big cams.