The 283 can benefit from the extra breathing capability because it can run in an RPM range that makes use of the extra CFM. That little 3" stroke crankshaft can spin happily at 5,000 RPM or more, without severe problems until the valves start to float. Zora Arkus-Duntov designed the engine that way with modifications in mind. Try that little trick with the long-stroke 235, with those spindly connecting rods, and you'll be picking up pieces. Yes, a 235 can live at high RPM, but not without pretty extensive modifications. The original post here specified adding 3 carbs to a "stock" engine.
Jerry
