We should have had a 7 bottom, on-land hitch plow after we got the 4630 with duals. It didn't even know the 6 bottom was back there, even in our heavy soil! Our 5020 had duals too but in our heavy soil, at times it was a tad more than it wanted.
When i started helping dad his power house was a 4020 diesel. Here in are heavy soil 4-14 is plenty for a 4020. In 1980 dad traded for a 5020 standard. A 20 ft off set disc and 18 ft chiese that is plenty..
