Posted 12/10/2018 12:29 (#7161890 - in reply to #7161802) Subject: RE: JD 9400
western iowa
I'm thinking mine was a 1991 and had the better 6.8L motor. I've heard to want the 6.8. The engine serial number plate will show the engine size in the serial number, starts with 68. Handled a 643 and 920 well. Looking back I think better advice is to find a good 9500. More power, usually bin extension and longer unloading auger is nice.