1975 K20 Brake Backing Plates(dust shields) needed

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75chevresto

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Location
Minnesota
First Name
Bob
Truck Year
1975
Truck Model
k20
Engine Size
350
We are working to restore a 1975 K20. rear brakes are shot and want to tear down to axle and replace all the brake parts. We cant seem to find a backing plate on line. The rear end is a 14 bolt full floater. We do not want to do a disc brake conversion. Parts store employees cant seem to find the backing plates. here are some pics of what we are trying to replace. Drums are 13" and are fastened to the hub with the lugs. We even tried LMC truck and they list all the brake parts but.... the backing plate. Any suggestions on where I can find these on line? Thank you.
 

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Memaloose

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Bayard, New Mexico
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Tony
Truck Year
1975
Truck Model
K20
Engine Size
350
Can't you just clean up the backing plates, they don't look very bad in the photos?
 

75chevresto

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Bob
Truck Year
1975
Truck Model
k20
Engine Size
350
we might but once we get that far in... we kind of want to be sure we can reuse. one of the plates is rotted out on bottom 2" of the plate. dont have a pic of that one. When we got the truck their were no brake lines left. previous owner just used truck to plow and got by with front discs so we anticipate the worst. what is so odd is with all the part you can buy for these square bodies, this part seems tough to event price out.
 

1975K20REBUILD

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Location
Texas
First Name
HeyYou
Truck Year
1975
Truck Model
K20
Engine Size
350
I have a 75 K20 that I've been working on the same thing. My backing plates are a little rusty but can be wired and cleaned.
My problem is I have it all stripped down and can't get the backing plate off.
Your post is from 2021, so how did it work out? Did you ever get the backing plate off the truck?
 

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