I have a ford 9" that I bought already narrowed for my A coupe project. It came with backing plates and drums only. The backing plates match the small ford bearing and the drums match the 5.5" bolt pattern. I measure the drum at 11" inside diameter and 2.5" width. I am assuming that the 2.5" drum width would mean that when I see widths listed it is referring to pad width and I'd go with 2.25"? Essentially 11x2.25 brakes? I am wondering which year/model I have to tell the NAPA guys to get the right shoes and spring kit, as I'm sure they won't be able to help without it... Thanks
Do you know what the rear came out of? That would make things too easy... The wheel pattern is 5 on a 5" bolt circle? This makes it possibly from a pick up or later Ford station wagon or full size car, as in a Galaxie. Some Edsels I believe were the same pattern too. Shoe width is usually .25" to .50" narrower than the drum surface. See if the Rock Auto link helps. The spring kits should be okay as well. I selected a 1973 Ford, which has 2.25" shoes. http://www.rockauto.com/en/catalog/...id+v8,1128901,brake/wheel+hub,brake+shoe,1688
As mentioned its 5.5" bolt pattern. same as bronco but this has small bearing ends so wouldn't have been it. Pinion is centered as well, not pumpkin. Not sure what it came from. I was thinking like 77 bronco or pickup would be similar. I have backing plates and drums, just need shoes cylinders and springs. Shouldn't worry about bearing size I imagine.
Some of the early Bronco's did indeed have the small bearings,the Bronco axle I used under my Deuce pickup was. HRP
The early Broncos did not use the same brake drums as the same year pick-ups. Some Broncos had 10 inch rear brakes while the 11-inch were the heavy duty option. The 11-inch drums for the Bronco were not as wide as other 11-inch drums used on 9-inch Ford rears. I do believe they were the same as some earlier pick-ups, prior to the introduction of the 9-inch rear. If your drums measure 2.5 wide, they are probably not from an early Bronco.
The common rear brake diameter for F-100/150s is actually 11 1/32", and many came with 2 1/4" width, a few with 2 1/2". Check the drum maximum size stamping/casting for an actual nominal size. I may then be able to provide some shoe part numbers.
post a picture of it if you can but the only 9" i have ever seen with small bearings and a 5x5 came from early broncos even the 2wd 6cyl trucks came with the big bearing
I think they are around 11 & 1/16 or slightly larger, maybe 3/32. No markings or numbers, because of the sand blasting and powder coating. Hopefully square is readable. From what I've read it's small ford bearing, 3 3/8s and 2".
The guys behind the counter at my local Carquest were kind enough to help me find drums, shoes, and wheel cylinders for our 9" swap by looking up the dimensions. I think the drums, and shoes were 70s Ford truck. We used a '57 passenger car housing and backing plates with custom axles and truck drums and shoes. We choose the diameter of the wheel cylinders to most closely match the originals since we weren't modifying any other part of the braking system. You'll likely have a couple different diameters to choose from, so consider what kind of master cylinder you'll be using and the front/rear bias desired.
You really need to find/know the maximum ID located on the drum to make sure they are safe/usable. Max on an 11" would be 11 1/16", and 11 3/32" on a 11 1/32" drum.
I rechecked the bolt pattern on the drums and was wrong. They are 4.5, I hadn't measured them yet and was going off of the what I was told when I bought them. Feel stupid but makes more sense now. Found this info on the hamb, should point me in the right direction. 11-1/32; Drum Diameter (#640-1485) X 2-1/2; Brake Shoe Width (#SS264) Note: NAPAs Catalog lists drum #640-1097 for 2-1/4; shoes & 2-1/2; shoes! 72-75 Ford Custom & Ford Custom 500 Police, Taxi, Station Wagon 76-79 72-74 Ford Galaxie Station Wagon, Taxi, Police 61-64 Sedan, Station Wagon, Police
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