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Author Topic: Brake backing plates  (Read 1378 times)
BMyers03
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Brake backing plates
« on: December 28, 2005, 09:55:19 AM »

Does anyone know how to tell if a 10 inch brake backing plate is for an A body or a B body when you don`t know what car they came from. I want to use then on an 8 3/4 housing. The brakes that are on them measure 2 1/2 wide but I`m not sure if they are the original brakes or not. I want to have axles made with the 4 1/2 bolt pattern and need to know what drums to buy. Thanks for any help.
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Jim_Lusk
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Re: Brake backing plates
« Reply #1 on: December 28, 2005, 11:49:39 AM »

This is why I recommend people buy backing plates and drums together from the same car. The backing plates for the a-body 10x1.75 and b-body 10x2 are about the same (or so I've been told), but for a 2.5" wide shoe the backing plate is not the same. The axles come in two offsets, a-body and everything else. Don't buy big bolt axles with a-body offset as you won't find drums that will fit properly.
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BMyers03
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Re: Brake backing plates
« Reply #2 on: December 28, 2005, 12:00:10 PM »

So if I understand this right, I should get A body axles made with 4 1/2 bolt pattern except get the B body measurement from the bearing to the outside axle flange, buy B body drums and then if there is a problem find B boby backing plates.
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Bakaruda
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Re: Brake backing plates
« Reply #3 on: December 28, 2005, 04:45:39 PM »

When you buy axels they should ask what brakes you have. At least Moser did.
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Cary Snyder
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Re: Brake backing plates
« Reply #4 on: December 28, 2005, 07:24:17 PM »

BMyers03,
Yes, that's what you need to order.
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