Do the 48-52 F2's have 12' brakes.

 

Yes, F-3's have larger rear brakes until, I think '52. I keep forgetting exactly what year. Do a search for "F-3" "brakes", you should turn up quite a few posts.

 

The Ford parts catalog lists 48-51 front brake drums as being 11 13/16" ID, and 51-52 as 12" ID.
Rear drums 48-51 are 12" ID, and 51-55 are also 12" ID, but listed under a different part number.

 

Interesting, my parts CD shows all are 12.00" but shows two different widths, 2" and 2.40" for 51/52 (only). Is yours a paper catalog, Wayne?

 

I just sold a set of four drums for a late '51-52 F-2. They are different than the earlier trucks. I bought the set to use on my '49 but found they were different. As far as I could tell the only difference was the depth of the drum, not the width of the braking surface or the inside diameter. I didn't measure my '49 drums though so there could be a slight difference. The shoes were the same, front and back, on my '49.

 

Here are the 51 Brake Specifications. I would expect 52 to be the same. And while 48-50 should be very similar, Bob and Ross have a much better idea on that.

 

Thanks for the info.
My 52 F3 has 12" brakes but I was not sure about the earlier 48-51's or if the F-2's & F-3's were the same.
From this I think the F-2's had 12" but the 48-50 F-3's had larger.

What I am really looking at is the backing plates for a project. I am told that '53-'56 F-2 backing plates will work for what I want but was wondering about the earlier ones.

In the parts book what different front backing plates are listed for F-2's for 48-56 and in what years are the F-3's different.

Thanks again for the info.
I will go back through it again and sort it all out.

 

Here are the listings for front brakes from the CD:

C = F-1
D = F-2
Y = F-3

The column to the right of the diameter is shoe width

Below are the listing for the backing plates

 

Yes, I have an original (not reprint) 48-55 Ford Chassis Parts paper catalog. It shows 48-51 D,Y front brake drum as 11 13/16 ID p/n 8 D-1125-A, and 51-52 D,Y 12" ID p/n 1D-1125-B. Neither mentions anything about width. I'm assuming there was some running change mid-year in 51 for front brakes.

For front brake backing plate, I list 51-55 D,Y, and 53-55 J (parcel delivery) as being the same. 1D-2012-B (RH) and 1D-2013-B (LH). But if you find 51's somewhere, be sure they aren't the early style that fit 48-51. They are not side specific (L and R use the same plate). It appears the 52-56 F-250/350 will work for your 52 F-3.

 

I think the 12" is a nominal dimension, and includes probably 0.060" or more for turning over its life. I also think that F-250 backing plates past '56 are the same, '56 is just the limits of my CD. Very common Bendix pieces. (Number Dummy?)

 

Ok
It looks like mid 51-56 f1 & f2 & f250 should be the same and work.

Now the search begins.
Any one have an extra set they aren't going to use.
The backing plates are the only part I need.

Thanks Richard

 

Are you looking to replace because of grooves cut on the pads where the shoes slide? I had to weld up all 4 of mine there. The weld metal seems to hold up better than new.

 

Ross

This is n O/T project.

I am working on a 1929 model A hot rod that has 49 F1 brakes on the front.
I want to put the aluminum finned Buick drums on it but they are 12".
I can do it on the rear because they are 12" 46 Ford car brakes.
With the 12" F2/3 backing plates I should be able to make the fronts work.

Thanks Richard

 

Sounds like a fun project! As well as my F-1 brakes work on a F-1, I can't believe you need 12" for an A, but Buick drums are cool! You ought to check the HAMB, there are dozens of articles on what works with them.

 

No! You need F-2/250 and F-3/350. F-1/100 are different. And since we don't know when the change was in 51, it's better to say late 51 than mid 51.