What's the best oils for tappet cam engines?

Hi everybody:

I bet this question has been asked many times. What are the best oils for the older style V8 engines like we are using? I've even read in an article that a Shell Diesel oil called Rotella T1 is good.

http://www.hotrod.com/techarticles/engine/flat_tappet_cam_tech/viewall.html