Largest John Deere Row Crop Tractor: 313 hp 8370R January 24, 2016 by farmlifetoday bigtractorpowerSun, January 24, 2016 4:23pmURL:Embed:313 hp John Deere 8370R tractor spreading chicken litter with a 30ft Chandler spreader. http://www.bigtractorpower.com