The 6.4 SRT cam is over $100 less than the 5.7 cam. The 5.7 springs are a couple hundred cheaper and seem to work ok and have similar spring pressure so I don't know what the difference is but I would get the 6.4 springs if I could swing em. The 5.7 springs do break occasionally after about 150,000 miles thats why I recommend replacing them while you have it apart.
Thanks! Going to look into the cam/springs/lifters. We are keeping this thing forever and I don't wan't to redo this again.
I ripped everything apart. What a mess. I have never pulled apart an engine that has pumped oil into the coolant. There are no obvious signs of failure, at least on the gasket surface. Is there a particular spot that these heads crack or gaskets fail?
