do you have lat. tiltIJ whether you do or dont shoudnt matter. weld some short reverse flight on corn auger in the center, make sure feeder chain is on fast pulleys on the right side, make sure var. speed lock out is released on left side of feeder house, speed header up to max speed, AND GO GET THE TRUCKS. 8 row head on 75 in 220 bu. corn should easily 5.5 - 6 mph.