Posted 5/31/2016 11:47 (#5329906 - in reply to #5329867) Subject: RE: 90 vs 40 series JD corn heads
Soutwest Ks.
I ran a 843 head for a number of years that was converted to poly. It worked well. Finally upgraded to a 1293 head. I really can't tell a whole lot of difference in how they feed. If you can buy the 90 series head for comparable money to the 40 series, I think I would certainly go with the 90 series. They are a better head overall then the 40 series.