318 low-rpm performance ........... for the NEWBE

So to get the stock 48* on a 250 cam would be 180 + 48 = 228, 228 - (250/2) = 103 + 4* (advance) = a 250 cam on a 107 lsa and 41* overlap, DV formula recommends a 107.6 lsa, you could make a pretty decent cam for a 318 with a 250 on an 107 lsa no reason to say no cam upgrades, and I'm sure you could go a few degrees from 48* or 107 etc.. without screwing things up to much with your V/P system, Also you could add Rhodes lifters shave off a few degrees down low, so why is it always no cam upgrades are possible ??