1980 LN700 Front End Vibration

[Dairy Feeder]

I just bought a 1980 Ford LN700 with 62,000 original miles, 1 owner very nice truck. When I drive it at 55 mph and up it has a very bad vibration, shakes the whole cab and steering wheel. The driveline feels good, has new front tires. Im out of ideas....any information would be great.

 

[cole in mo.]

Mabey bent rim or tires need balanced?

 

[Mtnfarmer]

(quoted from post at 15:16:12 07/10/16) I just bought a 1980 Ford LN700 with 62,000 original miles, 1 owner very nice truck. When I drive it at 55 mph and up it has a very bad vibration, shakes the whole cab and steering wheel. The driveline feels good, has new front tires. Im out of ideas....any information would be great.

Check all your tie rod ends including drag link arm and splines where it attaches to the steering box see if splined are moving inside draglink any bit will cause a vibration also king pin and bushing wear will cause too much toe in or toe out