Its still more expensive to buil the 5.9 than the 5.2...i have a bunch of parts of old 318s ad 340s cranks etc...i love love the 5.9 but something tells me that a light rotating 5.2 can really be the key....*** do the 89-90 318 roller cams share the same cams than the magnums ?
no and yes. Yes you can interchange them, no because one is ground for a 1.5 rocker ratio and the other 1.6 rocker ratio. I right now have a '89 roller 360 cam in a 360 magnum.