A question about Buick brake drum adapting

I've read several articles and postings re. putting Buick drums on early F1 brake set-ups. I understand the hub machining, the clearance problems with the backing plate and inner drum surface, and re-drilling bolt circles. My question is more basic. I got a pair of brake setups from a forties decade F1, self energizing and hydraulic. But it measures an eleven inch diameter brake assembly, the Buick drum measures twelve inches. Am I missing something? Or do I just have the wrong backing plates.

 

i believe they are talking about using them on early ford (37-48)backing plates that have 12" shoes.i may be wrong,somebody school me if i am.


-danny

 

The 12" Buicks are normally used with the '39-'48 Ford (Lockheed style) 12" brakes. Some folks that are lucky to score the old 12" Lincoln's (Bendix style) will also use the Buicks.

The F-100 brakes are 11" (Bendix) and naturally won't take the Buick drum. Don't know if the F-100 hub could be used, but I know the rest can't be.

It is common to replace the entire '39-'48 assembly with the F-100 assembly. I'm running that on my '36 3-window and '47 sedan delivery and it works great.

 

As Hot Rod pro said , You will need `37-`48 Ford backing plates&shoes , ... But , if you want "self energizing" brakes ,then use Lincoln 12" Backing-plates & shoes`n stuff ( `41-`48 (?? ) .. As far as I can remember , the F1 hubs will do jus`fine ... ( the Lincoln-parts are available as reproductions )
Klaz

 

buick drums are 12" and can be used on `39-`48 ford , f-2 brakes and Lincoln brakes....they are all 12"

F-1 are 11" s you have found out...buick drums will not work

 

There are some 12" assemblies used on the bigger trucks. F-250?? I have seen them but don't know exactly what years or truck size. They are equivelent to the Lincolns but the wheel cyl. have to be changed.

I had a set of F-100 hubs that could be used with the Buicks in my hands. I tried to get a set for my use and I can't find the same things. I don't know what they came on but the rest of the stuff was F-100. Drums,backing plates, etc. Apparently they were some kind of extra wide hubs and drums.

 

F-250 12" is the cheapest way to go. Look back through the Tech's for a post with pictures from Flat Ernie.