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Author Topic: Rear brake question?  (Read 387 times)
5258
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Rear brake question?
« on: November 17, 2007, 10:14:24 PM »

Will the backing plate on a 7 1/4 rear fit a 8 3/4 rear?

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5258

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5258 Performance  Shelbyville, Tennessee "Where the MOPAR factory built and race ready hotrods live again"
doug 371
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Re: Rear brake question?
« Reply #1 on: November 17, 2007, 10:53:00 PM »

small bolt different, big bolt same?
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Re: Rear brake question?
« Reply #2 on: November 17, 2007, 10:57:05 PM »

Sorry should have said, Its a small bolt pattern 8 3/4. Is it the same?

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5258 Performance  Shelbyville, Tennessee "Where the MOPAR factory built and race ready hotrods live again"
doug 371
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Re: Rear brake question?
« Reply #3 on: November 17, 2007, 10:57:50 PM »

different plates, same brakes
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Re: Rear brake question?
« Reply #4 on: November 17, 2007, 11:03:39 PM »

Doug 371

The project I'm working on is relocating the springs and swapping out the 7 1/4 for a 8/34 in my 69 dart. I really didn't want to get into the brakes at this time and wanted to wrap up the rear swap first, I thought I saw a post in the past were someone said he had swapped rears and just kept his intire backing plate and drums in tact and just swapped it to the 8 3/4.

Maybe it was just wishfull thinking.

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5258
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5258 Performance  Shelbyville, Tennessee "Where the MOPAR factory built and race ready hotrods live again"
doug 371
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Re: Rear brake question?
« Reply #5 on: November 17, 2007, 11:06:23 PM »

small bolt 7.25 backing plates only have 4 bolt holes...8.75 has 5...i just supplied my friend some 10" acking plates for a 7.25 cause the 8.75 were different
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Re: Rear brake question?
« Reply #6 on: November 17, 2007, 11:46:44 PM »

Doug 371,

Don't laugh to loud. Can that botton bolt hole be drilled out and if so will the 9in backing plate fit on the a body 8 3/4. Really don't want to swap out brakes unless its a last resort.

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5258
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5258 Performance  Shelbyville, Tennessee "Where the MOPAR factory built and race ready hotrods live again"
doug 371
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Re: Rear brake question?
« Reply #7 on: November 17, 2007, 11:49:23 PM »

i dont think the 4 bolts are exactly in the right place either...i had parts, so we didnt have to figure that out lol
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Jim_Lusk
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Re: Rear brake question?
« Reply #8 on: November 18, 2007, 12:47:35 AM »

Yes, I believe the four bolts are in the right place, but not 100% positive. Drill the bottom hole and see....
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5258
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Re: Rear brake question?
« Reply #9 on: November 18, 2007, 10:31:03 PM »


My current set up is 9in drums, My question is can I change out the rears w/o disconnecting the brakes, I really,really don't want to get into the brakes yet. Can I just remove the 7 1/4 axles pull them, leave the brake hard ware on the backing plate, drill the bottom hole in the 9in backing plate and then assy to the 8 3/4? Will it work?

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5258
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5258 Performance  Shelbyville, Tennessee "Where the MOPAR factory built and race ready hotrods live again"
Jim_Lusk
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Re: Rear brake question?
« Reply #10 on: November 18, 2007, 10:59:04 PM »

I believe it will, but you'll know for sure when you try it.
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Re: Rear brake question?
« Reply #11 on: November 18, 2007, 11:00:48 PM »

Thanks. Plan to do after stuffing myself with turkey Thursday, I'll keep everyone posted.
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5258 Performance  Shelbyville, Tennessee "Where the MOPAR factory built and race ready hotrods live again"
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