I'm trying to rebuild the top half of my engine, Ford 460. I'm on a budget after retiring from the military and this project is for my Son and I to work together. I want to start with a Cam, but dont want to replace the heads at the moment. Of course, I will replace the lifters as I put the engine back together. Anyone know of a good Cam that will work with stock heads, valves, and pushrods? Please help.