I just tried to install a Grant (#4267) steering hub on my ‘51 Ford shoebox and I can’t close the gap from the hub to the column. Is this normal? It’s as far down as I can get.
Then move the hub up. Loosen the clamp at the gear box and move the whole column up a little to close the gap without going too far that the column jacket disengages from the gear box.
This seems to be an issue with this kit #4267 Grant must have made a change as this has come up on several facebook Ford groups also. I used the same kit 6 years ago and have the opposite issue the hubs were rubbing when I turned the wheel in my '54 Ford. It seems the later kits won't allow the adapter hub to seat any further down the shaft. Some guys have contacted Grant's Tech line so you might try that and see if they have a solution. Check out the negative review here and his solution. https://www.amazon.com/Grant-Products-4267-Specialty-Installation/dp/B000CMD90Y#customerReviews
Here's previous thread posted here on the H.A.M.B. https://www.jalopyjournal.com/forum/threads/steering-wheel-adaptor.752225/
The problem with Grant adaptors is they're injection molded and the molds will wear out over time. If they actually broached the splines you wouldn't have this problem....
I would go to the Bad bath and beyond and look at bowls or pots for the size that would fit. Drill your holes and your done.. First I would look and see if the column could be adjusted as was mentioned by BJR..