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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Brakes and Braking Systems => Topic started by: elijahcollins688 on April 25, 2018, 07:00:45 pm

Title: Backing plates
Post by: elijahcollins688 on April 25, 2018, 07:00:45 pm: Hi, I have a 1978 Scottsdale 10 4x4 1/2 ton and I need new backing plates for the rear but I can’t find any. Could I please get some help? I would really appreciate it. God bless.
Title: Drum brakes
Post by: elijahcollins688 on April 25, 2018, 07:11:35 pm: Hi, I have a 1978 Scottsdale 10 4x4 and I need new drum brake backing played for the rear but I can’t find any. Could anyone help me?

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Title: Re: Drum brakes
Post by: Irish_Alley on April 25, 2018, 07:20:19 pm: just a heads up you dont need to keep posting the same question. someone will get around to you and give you a good answer. the only thing i know of right off hand is a junkyard but youre asking for new so i cant help you.
Title: Re: Drum brakes
Post by: elijahcollins688 on April 25, 2018, 07:37:42 pm: Quote from: Irish_Alley on April 25, 2018, 07:20:19 pm
just a heads up you dont need to keep posting the same question. someone will get around to you and give you a good answer. the only thing i know of right off hand is a junkyard but youre asking for new so i cant help you.
Okay, sorry for posting too many times. I’m new, but thanks for the advice

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Title: Re: Drum brakes
Post by: Irish_Alley on April 25, 2018, 07:51:03 pm: its ok, were mainly here to have fun and help each other. but if someone post muiltple post on the same thing it kind of floods our system and slows us down
Title: Re: Drum brakes
Post by: Rapid Roy on April 25, 2018, 08:56:05 pm: Welcome to the site.
Title: Re: Drum brakes
Post by: VileZambonie on April 26, 2018, 05:23:04 am: Google GM backing plate 12 bolt. You may have to make some modifications to what you find to make them work.
Title: Re: Drum brakes
Post by: elijahcollins688 on April 27, 2018, 06:04:36 am: Quote from: VileZambonie on April 26, 2018, 05:23:04 am
Google GM backing plate 12 bolt. You may have to make some modifications to what you find to make them work.
I ordered one for the 12 bolt but the hole for it to fit on the axle was too small, the bolt pattern for the holes was wrong, and it wasn’t the right size for the drums even.

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Title: Re: Drum brakes
Post by: elijahcollins688 on April 27, 2018, 08:20:17 am: I also ordered a disc brake conversion kit for my truck a while back and they didn’t fit either even though it was for a 12 bolt. Does anyone know why this is?
Title: Re: Drum brakes
Post by: Irish_Alley on April 27, 2018, 03:17:39 pm: are you sure you have a 12 bolt?
Title: Re: Drum brakes
Post by: VileZambonie on April 27, 2018, 03:56:46 pm: 12 bolt truck is not the same as 12 bolt car.

https://www.ebay.com/itm/12-Bolt-Rear-Backing-Plates-Drum-Brake-for-73-87-2wd-Chevy-GMC-truck-/273175442755?_trksid=p2385738.m4383.l4275.c10
Title: Re: Drum brakes
Post by: elijahcollins688 on April 28, 2018, 05:26:00 pm: Quote from: VileZambonie on April 27, 2018, 03:56:46 pm
12 bolt truck is not the same as 12 bolt car.

https://www.ebay.com/itm/12-Bolt-Rear-Backing-Plates-Drum-Brake-for-73-87-2wd-Chevy-GMC-truck-/273175442755?_trksid=p2385738.m4383.l4275.c10
Okay, that makes sense. Thanks for the info.
Title: Re: Drum brakes
Post by: elijahcollins688 on May 03, 2018, 08:07:54 am: So I was wondering if these would work because it doesn’t specifically say that they fit my truck but they are about the same size as my drums. I was just wondering, thanks for any help. https://www.amazon.com/ACDelco-15650129-Original-Equipment-Backing/dp/B004JBB1EA
Title: Backing plates
Post by: elijahcollins688 on May 12, 2018, 09:03:03 pm: Okay, I am really desperate. I have a 1978 k10 that I can’t drive yet cause I have all the parts for brand new rear brakes except for the backing plate. It has a 12 bolt truck rear end and I can’t find em anywhere. I would really appreciate the help cause I’ve ordered like 3 backing plates and none of em fit. I’m also 16 and really want to drive. Thanks and God bless.

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Title: Re: Backing plates
Post by: VileZambonie on May 13, 2018, 06:51:31 am: Are you opposed to used? There is a set posted in the link above.
Title: Re: Backing plates
Post by: elijahcollins688 on May 13, 2018, 08:36:03 am: Quote from: VileZambonie on May 13, 2018, 06:51:31 am
Are you opposed to used? There is a set posted in the link above.
For that price I kinda am when new backing plates go for that.

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Title: Re: Backing plates
Post by: Ronno6 on June 28, 2018, 12:31:56 pm: Anyone know what brake option (i.e. JB3, JB5,etc..) was used with 12 bolt rear ends??
How can I visually tell the difference between JB3 and JB5 backing plates?
Which are the ones in the auction ??