I'm working on swapping a 9" into my 77 Comet. I'm using the rear drums from an 81 Bronco (full size) same brakes used on F150's. But I though I could just use drums for an early 80's F100, but apparently those got smaller 10" drums. I need 11 x 2.5 drums with a 5 x4.5 bolt pattern. Anyone got any ideas on what application that was from ? Mid 70's full size Ford is one, but I'm not sure of the bolt pattern, that could be 5 x 5 like the big Lincolns.
Anyone done a 9" swap with 11" drums ?
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ultrastang
Founding Member
What is the rear end from? --I'm guessing it's a large bearing since you are looking to use the brake assemblies from a truck. Most of the '65-'79 Ford half ton trucks used 11" x 2¼" rear drums with 5-on-5½" lug patterns.
It's very difficult to get individual replacement parts for early model large drum assemblies --especially if someone is looking for drum brake parts for the '57-'59 Ford big car 9-inch rears.
I had a '57 Ford station wagon large bearing 9-inch housing that came with 11" x 2" wide drums. When I put the 9-inch rear end under my '66 fastback, I robbed some rear drum assemblies from a '65-'67 Ford Galaxie that measured 11" x 2½ with a 5-on-4½" lug pattern. --this may be an alternative for you if you can locate a Galaxie of those year models.
Nevermind, Summit carries the drums these are Ford racing's part numbers FMS-M-1126-B @ $38.50 each. The brakes are off an 81 Bronco rear. Going on a narrowed 9" rear housing I bought off ebay. It was cheaper to buy this housing than to narrow the Bronco rear. Using the chunk out of the Bronco rear too----31 spline Trac-loc with 3.50's. I thought about the 70's fullsize brakes but Advance's site doesn't give the bolt pattern, some of these were 5x5. Advance's prices were $20 a drum (at least) over Summit's.
Thanks for the info too, I was hoping you'd come thru with something I'd missed. 
I hadn't tried the 60's full size stuff in looking.
fasttback
New Member
When I did my swap (57 9" rear end into a 1966, similar to ultrastang) I found a complete and ready to run set (11" drums, backing plates and hardware) on eBay for $100. The PO said that the drum set was refurbished from Currie but the backing plates have "Ford" stamped on them.
Good luck with your project.
Good luck with your project.
I've got a pair of 11"x 2.25" in the garage off a 57" country squire. I rebuilt them several years ago but they still have most of the pad on them.
I took the whole assm. off when I did a rear disk swap. I had a buyer for them at the spring swap at Columbus, but I think he had a small bearing rear. Let me know your housing end measurements if your interested.
I took the whole assm. off when I did a rear disk swap. I had a buyer for them at the spring swap at Columbus, but I think he had a small bearing rear. Let me know your housing end measurements if your interested.
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