Camshaft Install - how tight is too tight?

I installed new Clevite cam bearings in my 383 build. I slid the Comp Cams camshaft in and it's tight. I read here and on FBBO of some guys scraping the bearings where there's a tight fit. I used Lisle 18000 cam installer tool, and the bearings aren't cockeyed.
I pulled the cam and installed the old one which moved more freely, but tighter than with old bearings (naturally).
Before I do anything, how tight is too tight? I can not turn this by my fingers on the cam dowel. I put on the old cam sprocket and it turns with one finger - with a lot of force. A diesel mechanic buddy of mine told me it's fine and it will loosen up running on it's own quickly. Or at least that's his experience with truck engines. PLEASE HELP!