Buick uprights?

Did Buick use identical uprights from 1937 to 1956? So I been told.
The reason I ask is that I found a pair from a 1955 Buick and I want to confirm that I can use them on my –41.

 

By "uprights," are you referring to the spindles?
If so, I don't know how far back they go, but the '54/'55 spindles are interchangeable with eachother, and the '56 spindles were redesigned to have a little more caster built into them for better cornering, and will bolt to the '54/'55 cars.

-Brad

 

According to my 1957 edition Hollander, 40-53 is the same then 54-56.

 

My Buick book says 41-53 steering knuckles interchange.

 

not to confuse matters, but fatman fab sells dropped uprights as 37-56. so far it seems that they may be the same, from 41-53 at least.

 

Yeah, I see that too on Fatmans site. Did somebody know what’s different to –55-56 compare to the earlier ones.

 

im just guessing here, but educationally, i know Chevy went from king pin to ball joints that year, maybe Buick did to therefore different upright/spindles required for 55+

 

Buick uses the kingpin style up to 1956 and ball joints from 1957.
But they seams to change the design from –54 and up according to previous posts.
I wonder what they change besides the retirement of the “knee action shocks” and going to regular ones. I know a pair of dropped uprights for the right kind of money but they sits on a –55.

That's the reason for my investigation