Aj ain't saying small cam he's saying no cam, stock 318 cam only with stall and gears, if you go anything above stock you've murdered the bottom end, and that larger basically only adds on top (totally over looking midrange gain). To me seems a little drastic. I'm not saying stab a big cam in but there are cams that will give gains without screwing up the under 2500 rpms too bad, where's that line is the tricky part.
Like your issue with the converter it's gonna be different for every individual everyone has slightly/vastly different compromises/likes.