help a brother get a brake - The 1947 - Present Chevrolet & GMC Truck Message Board Network

nu2-72 · 06-02-2009, 06:38 PM

pun intended.
1972 3/4 ton 4x4, front axle brake setup. This is todays issue.
The calipers for 1/2 and 3/4 are the same.
The rotors are not.
Knowing several things, I need some help.
The backing plates with dust shields are almost non-existant. And because the trucks are different, you cannot interchange them.
I went to a local salvage yard and asked for later model 3/4 backing plates. They had to pull them and I picked them up. He assured me that they were 3/4 ton plates. They cannot be. The rotors dwarf the plates and it would be impossible to get the caliper mounting bolts installed.
Does anyone have a 73-up parts manual that might look up the backing plate numbers for me?
I will take these back and see what he says. Maybe I need 1 ton in 1973-up.

DirtyLarry · 06-02-2009, 07:04 PM

I would think any 1971 to 1987 ¾ ton Dana 44 or Corporate 10 bolt front end would have the same backing plates??

When I swapped my K10 from 6 lugs to 8 lugs all I changed was the backing plates and rotors. At that time (1996), I found almost a never ending supply of them at the junk yard on various years of ¾ 4x4’s that were all the same.

**jerry moss** · 06-06-2009, 10:54 PM

if you don't find anything locally, let me know, i have a couple sets of the later style H-D stamped, solid backing plates off mid 70s 3/4 tons

nu2-72 · 06-07-2009, 09:14 AM

Thanks Jerry. I may need your help.
I went back to this yard last week to swap them out and he says he is out of them. No telling when a donor truck will come in.
So Saturday I drove 160 miles to a pick-n-pull and it was a bust. We are almost out of yards in this area.
I will PM you.

dammitmitchell · 06-07-2009, 11:27 AM

just a heads up, you probably WONT find them ina junkyard easily..
due to the massive interest in solid axle crawlers and muddres and projects, it's very hard .. very hard to find a good solid front axle hiding out...
check your local craigslist for a parts truck or the newspapers because honestly, besides repop (overpriced) or sheer luck.. those are your best bet..
it took me 2 months to find junker axle shafts......

06-02-2009, 06:38 PM	#1
nu2-72 Senior Member Join Date: Apr 2001 Location: Amazonia, Mo. USA Posts: 2,821	help a brother get a brake pun intended. 1972 3/4 ton 4x4, front axle brake setup. This is todays issue. The calipers for 1/2 and 3/4 are the same. The rotors are not. Knowing several things, I need some help. The backing plates with dust shields are almost non-existant. And because the trucks are different, you cannot interchange them. I went to a local salvage yard and asked for later model 3/4 backing plates. They had to pull them and I picked them up. He assured me that they were 3/4 ton plates. They cannot be. The rotors dwarf the plates and it would be impossible to get the caliper mounting bolts installed. Does anyone have a 73-up parts manual that might look up the backing plate numbers for me? I will take these back and see what he says. Maybe I need 1 ton in 1973-up. __________________ 72 3/4 4x4 350 4spd 72 3/4 4x4 350 auto 2004 Duramax Silverado 4x4 2006 Duramax Crew cab 4x4 2010 Harley Ultra Limited 2011 Harley Street Glide

06-02-2009, 07:04 PM	#2
DirtyLarry Windy Corner of a Dirty Street Join Date: Jun 2003 Location: Pueblo West, Colorado Posts: 2,926	Re: help a brother get a brake I would think any 1971 to 1987 ¾ ton Dana 44 or Corporate 10 bolt front end would have the same backing plates?? When I swapped my K10 from 6 lugs to 8 lugs all I changed was the backing plates and rotors. At that time (1996), I found almost a never ending supply of them at the junk yard on various years of ¾ 4x4’s that were all the same. __________________ Current vehicle collection: 1978 Chevrolet K10, 8.1L, NV4500, NP205 1989 Chevrolet Suburban, 8.1L, NV4500, NP241 1993 Chevrolet C1500 Sportside, TBI 7.4L, 4L60E 2001 Chevrolet K2500HD, Ext Cab, SWB, 8.1L, ZF 6 speed 2014 Chevrolet Impala LTZ 3.6L Vortec 8.1L because life is too short to tolerate underpowered vehicles Instagram

06-06-2009, 10:54 PM	#3
jerry moss Born Psycho Join Date: Feb 2001 Location: brentwood,cal,usa Posts: 4,936	Re: help a brother get a brake if you don't find anything locally, let me know, i have a couple sets of the later style H-D stamped, solid backing plates off mid 70s 3/4 tons __________________ jerry moss 72 cheyenne super K20- tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,tow hooks,bumper guards,toolbox,aux. fuel tank,posi front and rear,plus other goodies!!! SOLD 69 suburban K20-tilt,tach,vacuum,speedwarning,buckets,shoulder belts,am/fm,4 inch all spring lift,4 speed, 14 bolt full floater, dana 44 HD,warn winch,posi front and rear,tow hooks,plus other goodies. 73/80 chevy/gmc K20 SB400,turbo 400,205,tilt,a-c,gas hog. 77 K/5 cheyenne blazer-daily driver/beater. SON HAS IT NOW BRENTWOOD,CALIFORNIA

06-07-2009, 09:14 AM	#4
nu2-72 Senior Member Join Date: Apr 2001 Location: Amazonia, Mo. USA Posts: 2,821	Re: help a brother get a brake Thanks Jerry. I may need your help. I went back to this yard last week to swap them out and he says he is out of them. No telling when a donor truck will come in. So Saturday I drove 160 miles to a pick-n-pull and it was a bust. We are almost out of yards in this area. I will PM you. __________________ 72 3/4 4x4 350 4spd 72 3/4 4x4 350 auto 2004 Duramax Silverado 4x4 2006 Duramax Crew cab 4x4 2010 Harley Ultra Limited 2011 Harley Street Glide

06-07-2009, 11:27 AM	#5
dammitmitchell the pollock Join Date: May 2008 Location: abilene, texas Posts: 4,423	Re: help a brother get a brake just a heads up, you probably WONT find them ina junkyard easily.. due to the massive interest in solid axle crawlers and muddres and projects, it's very hard .. very hard to find a good solid front axle hiding out... check your local craigslist for a parts truck or the newspapers because honestly, besides repop (overpriced) or sheer luck.. those are your best bet.. it took me 2 months to find junker axle shafts...... __________________ Jack of ALL trades, Master of none.. (but one... procrastination) Army vet 02-08 RIP El Jay! Miss you brother! http://67-72chevytrucks.com/vboard/s...d.php?t=343538 http://67-72chevytrucks.com/vboard/s...d.php?t=386042



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