By the way, I just installed the new camshaft and bearing towers
and the camshaft seems to be hard to turn by hand with the rockers not yet installed. Is this normal? How tight should it be?
What could cause this tightness? [/B][/QUOTE]

In my book, it say:
"
Caution!
The camshaft should turn easily by hand.
"

Be careful, owuld hate to see you mess up your cam, bearings, et al.