Dude
Mega technical question, go on to the KENT CAMS web site and type in your engine, it will give you a list of options, with all the specs of the different cams that it sells, hopefully this'll save you a lot of grief... be careful of re-griding cams, as if the base circle is ground too much on solid cam lifters, the shim can 'rock out', if you're running hydrolic, the problem is less pronounced, but you could still end up with excessive valve gap.
kraM