My Dad bought a nice used 64LeSabre, that I got to drive after I got my lecense, in 69. It had a 401 torque monster. I dunno what it had for a convertor but dang that was smooth. One day we were on a family outing and I got to drive! A short time after we settled into the trip, Dad leans over and says something like " are you in a hurry to get to Grandma's house?" I looked down and saw that I was speeding big time.