Hey guys, I have a problem that I need some help on. I am changing some parts on my truck. I am putting the 18" Studebaker wheels all the way around and changed the front axle to a dropped 1936 and changing the f-100 brakes to f-250 brakes. The drums I had picked out were just normal 1940 Ford drums and hubs but they do not fit onto the 1950's 12" Bendix backing plate. I have no idea what drum fits to lease. Sure, the Buick's do but I cant run those and the 18" Studebaker wheels together. Any suggestions on what I can do to make them work. what hubs and drums would work? Can I machine the drum or backing plate so they fit properly. Give me your ideas. Thanks you for your time. Mike
I have a set of the F-250's and I haven't figured out how to use them either. They are positioned further to the outside so the 40-48 drums do not fit. I am thinking that 40 drums mounted on the wrong side of 46-48 hubs would move the drums out. Don't know if it would be the right amount. This would require a centering ring to be welded to the hubs. Wilson's look good in retrospect!
How 'Bout if ya Cut the Outer Dust lip off the drum ? I had to removed the OUTER lip on my '48 Ford Rear drums to fit with my LINCOLN brakes.. I am almost Certain you need to cut the dust lip off to fit. Be sure you dont have F-350 backing plates ... They look the same but the drums were 12 1/8 Diameter. By the way, and Its only my opinion .... But those wheels are Terrible on Jimmy Shine's Pick up, Why would ya wanna do it again ? Like i say, its only MY OPINION.
It is not just the dust lip. The whole brake drum surface is about a 1/2 in to far toward the backing plate. The shoes would have to be narrowed or the drum moved out. F-1 or F-100 hubs are other possibilities.
Interesting, I havent tried this swap yet cus i have Plenty of LINCOLN brakes to use. You may have somthing with the F-1 / F-100 hubs. I have both here & the F-1 flange is about a 1/2 further out than the F-100.
I have those backing plates on the front of my coupe with Buick drums. I had to machine the **** out of the dust groove and take just a hair off of the edge of the steel liner to get them to fit. The big truck backing plates don't have the same offset as the Lincolns, so they position the backing plate further outboard. And in their original application, the drums were an 8 lug bolt pattern I believe. I don't think you're going to have much success running the normal '40 style drum without some major reworking of the drum or a different combination of hub and drum....and even then I'm not sure how well it would work. Personally I'd call Bob Wilson and order a set of his Lincoln-style backing plates and be done with it. Same look and function, less h***le.
The offset of the F 250 backing plate is "flat" compared to the 40 type, which is pushed in toward the center of the car. A finned Buick drum will fit with a 40 hub on the inside of the drum. There is an excellent write up in the tech archive.