A couple of things, a JD 2640 was 70 hp with 276 ci engine. Watched a neighbor with a 3020 diesel with small 2 row cut and blow and it had a hard time running it (hay or corn). Another neighbor tried his JD 3800 on an IH 784 tractor and lacked power to move out of lowest gear. He made sure he got his 856 diesel up and going ASAP. Cutterhead on a 900 is designed for 3 row capacity along with the drive line. Takes more power to spin that (even no load) than a NH 790, JD 3950, etc. You MIGHT get the 2640 to run it, but you will be disappointed with minimal productivity. If you have a choice in this, I would look at going up more hp or find a smaller chopper in that order.
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Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our
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