Probably your drive shaft needs balanced. check to see if you have some gunk stuck on it that could be throwing it off it also could be a rim that need balanced or aligned
Probably a wheel balance problem or possibly a bent rim.
Your universal joints are shot, get them replaced asap!
23.2 hours, plus stops and traffic delays.
Its either timing or fuel intake problem.
Probably the through out bearing.
the tires might be out of balance .
How fast are you going? At 60mph that should be 3 hours without stops.
The total driving time, excluding stops or delays, is 4 hours 27 minutes.
20hours 50minutes plus stops for food, gas, pits, rest, etc.
Excluding stops, the total driving time would be 2 hours 25 minutes.
Carburator problems -- dirty gas -- water in gas
The law of inertia, simply put, in terms of seat belt safety means that on impact, the car that was going 55mph stops almost instantly, while the contents of the car, for example, the passenger continues at 55mph. Therefore, without restraints, the passengers slam into the dash at 55mph causing serious bodily harm.