Hi Rich,
In 2014 you posted the same question
47 Front Shocks. Exactly what has been rebuilt in your suspension system and by whom? A lot can be wrong with a suspension system, but driving through a pot hole is not going to be handled by a 70 year old suspension system as well as it is in our modern cars. Here are a list of some of the possible problems which you can find more info on by doing a SEARCH of our old posts:
READ YOUR MANUAL AND UNDERSTAND THE RELATIONSHIP OF ALL THE COMPONENTS OF YOUR SUSPENSION AND STEERING SYSTEM
1) Are your shocks, front and
back, in perfect condition - don't leak don't bounce
2) Are your tires in perfect condition - rims not bent, tires in balance
3) How much play is there in your king pins and bearings
4) What is the condition of the other components of your suspension system - go through the Chevs of the 40's Parts Catalog for front suspension rebuilds, rear suspension rebuilds, and steering box rebuilds
Suspension and Steering Parts In dealing with any steering issue all of the above must be in excellent condition, [b]including the front end professionally aligned, and then the following should be followed:[/b]
1) New pitman arm bushing if not in excellent condition
2) Steering box full of fluid although if parts are worn this is not going to improve any steering problem
3) Remove the steering box and rebuild it. DO NOT ADJUST YOUR BOX IF YOU DO NOT KNOW THE CONDITION OF ITS PARTS. Basic parts are available from the catalog. The worm gear and the shaft with roller are not normally available so find a company that rebuilds steering boxes, and have yours rebuilt. USED parts could be found on Craigslist or ebay. I do have some pictures of damaged parts which I can post. It is typical for steering boxes to leak, once there is no fluid in the box then excessive wear and damage will occur. A well maintained steering box should not require the replacement of the worm gear or the shaft with roller.
Best practice is at each oil change check the fluid levels all your shocks and your steering box.
Good luck, Mike
P.S. Are you missing the lower A Arm bumpers or upper crossmember bumpers?