I had a 351C 4V in my '56 F-100 pickup when I was in high school. No idea how much torque it made but I'm lucky I'm still alive. I'd drive that truck on a two line highway over to visit a girlfriend and I would pass 5 or 6 cars at a time. Just punch it from 55 and it would bury the speedo in nothing flat. 100+ mph in a '56 F-100 with drum brakes and a straight axle was not the smartest thing to do. But I was only 17 and didn't know any better! I don't recall any flat spot in the torque curve.......