Kurt,
Toe-in? Can be measured and adjusted.
Caster? Usually just a matter of being sure that the 2-degree wedges are in place on both sides (fat edge to the rear).
Caster? Could be bent axle or bent spindle(s).
http://chevy.oldcarmanualproject.com/shop/1948_51truck/51ctsm0312.htmWait to hear from someone else who is better versed in steering issues.
Double-posting of a topic is normally discouraged. However, you could re-post this specific question in the General Truck Talk forum. This question is not really panel-body-truck specific. More people read posts in the General Truck Talk forum.
I am going to look for other responses with great interest. The 1954 pickup that I am now restoring had the same severe (and scary) symptom when making a turn. Since every part in the front end was broken, worn severely, and/or bent and abused, I have replaced everything but the front axle. BUt, I'd like to know which bad part was the cause of that problem.
