Quote Originally Posted by 46yblock
I read somewhere that while advancing the cam timing does improve low speed/rpm performance, retarding cam timing doesnt really have any beneficial effects. Wish I could cite the source, but I'm 90% sure it was one of the Engine Masters series mags from last year. The issue had a section on understanding cams, timing and such.
I've never installed a cam retarded, so have no direct experience but I've read the same thing.