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Old 04-24-2016, 10:04 PM   #18
j2rkt88
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Join Date: Apr 2016
Location: Paducah, KY
Posts: 2
Re: Rear brake upgrade: 11” to 13”

Awsome post... I'm getting ready to do a differential swap on my 1984 GMC Camper special that has a 9.5" semi floater and the 13" drums which has been making noise for years, but now the pinion seal failed and the noise has gotten much worse.
I acquired a 1977 C-20 with the heavy commercial suspension (G51?) with a 10.5" 14 bolt and the same 13" brakes. I'm keeping that huge front sway bar !!!.
I noticed, the E brake set up is completely different between the two trucks and was flummaxed as to what to do, but .... if... the backing plates between the two differentials will interchange, then I'm back in business. I just wish the drums and brake parts would interchange also.
Anyway.. great post.
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