Changing from manual steering to
ps in my 66. The pitman arm on the factory manual box casting number ends in 206, the pitman arm for ps casting ends in 208. Side ny side they look identical. I thought the curve would be different? I see no difference other than the cast numbers. I was told the parts manual shows a 207 or 209? Anybody have some insight?
i have two 66 442’s , my track pack car has ps and it has a 208 pitmann arm?
also do you need to change the rag joint or are they the same?

 

Andy be careful here.

There was an issue when I had my 69 Supreme converted from power to manual. Where the pitman arm and centerlink meet is slightly different.

Don't know if thats the same for 1966 442.

Here is a more detailed breakdown. From a Buick thread asking "centerlink different for power & manual".