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  #1  
Old 04-26-2021, 06:19 PM
JERSEY JOE's Avatar
JERSEY JOE JERSEY JOE is offline
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Join Date: Jan 15, 2004
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BRAKE BACKING PLATES

Does anyone know where I can buy new brake backing plates for the AMC 20 rear end?
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1977 CJ 7 360 T-18 IHC D300 FARM TRUCK NY
1985 CJ 7 AMC 401, CLARK 285SV 5 SPEED, DANA 60, DANA 44, RUBICON 4.5 LIFT. 37 KRAWLERS
1987 J-20 401 90% COMPLETED.
1985 J-20 360 6 inch lift, 37's plow truck
1986 J-20 360 stock well rusted plow truck
1970 AMX CURRENT PROJECT
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  #2  
Old 04-27-2021, 06:10 AM
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fulsizjeep fulsizjeep is offline
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I could be wrong but I thought they were the same between D44 and AMC20...
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Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s with a few Evil Twin & TT's Fabworks mods
76 401 Wag, 77 401 Wag, 77 401 J20
http://eviltwinfab.com http://www.ttsfabworks.com
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  #3  
Old 04-27-2021, 08:53 AM
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tgreese tgreese is offline
 
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Maybe the same as the later Dana 44s after the Chrysler takeover. Certainly different from the earlier 5-lug Dana 44s which are Bendix brakes. They are both 11"x2", but the 6-lug axles have Delco brakes, not Bendix.

Pretty sure there is no source for new backing plates other than some NOS out there somewhere. Backing plates don't wear out really, so there should not be much demand. Whats wrong with some used ones? NB the donor has to be an FSJ 20 or maybe later 44, not a CJ. The CJs had Bendix brakes through 1978, then went to 10"x1.75" for the rest of the CJ's run.

There are parts books on the Tom Collins site that could provide a part number. Search the internet with the part number. Don't get your hopes up if some Chrysler parts seller lists it - seems they routinely list the part numbers and then tell you there is zero remaining stock.
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Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
ECO Green: '15 FCA Jeep Cherokee KL Trailhawk

Last edited by tgreese : 04-27-2021 at 08:59 AM.
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  #4  
Old 04-27-2021, 09:05 AM
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fulsizjeep fulsizjeep is offline
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I have a tendency to wear them out this way...

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Flint
Ran when parked.
http://jubileejeeps.org/quadratrac
88 GW, 401/727/208, 5" lift, D44s/4.10s/locked up, 35s with a few Evil Twin & TT's Fabworks mods
76 401 Wag, 77 401 Wag, 77 401 J20
http://eviltwinfab.com http://www.ttsfabworks.com
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  #5  
Old 04-27-2021, 05:42 PM
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tgreese tgreese is offline
 
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That'll buff out (The requisite response.)

The parts book shows the same PN from '77 through '80, which implies that the '77-79 Dana 44 backing plates should work for the 20 axle. '74-76 may be ok too, though they have a different part number.

10-25-45 '77-80: 812 7778
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Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
ECO Green: '15 FCA Jeep Cherokee KL Trailhawk
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  #6  
Old 04-28-2021, 02:48 PM
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cu4whln cu4whln is offline
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Quote:
Originally Posted by fulsizjeep
I have a tendency to wear them out this way...



DAAAMMMM.
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1977 "401" 'Da Chief
1979 Chero: "Madness" [Sold]
1985 CJ : Renegade -locked and loaded
2005 Unlimited Rubicon - Built
2001 XJ : Driver - 2016 JK 2 door

'Da Chief here: http://www.ifsja.org/forums/vb/showt...ighlight=chief

Round 2- LT Swap: 'Da Chief:
http://www.ifsja.org/forums/vb/showthread.php?t=188457

"Madness" build here:
http://www.ifsja.org/forums/vb/showthread.php?t=89280
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  #7  
Old 04-28-2021, 07:43 PM
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backroadin' backroadin' is offline
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Join Date: Aug 11, 2004
Location: Vermont
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Quote:
Originally Posted by fulsizjeep
I have a tendency to wear them out this way...

Just needs some Slick50 rubbed on those and drive in softer dirt... they'll last longer. "WagWag"... love it!

This may be a dumb question, but can you just swap to Bendix brakes (the whole setup) as a last resort?
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Last edited by backroadin' : 04-28-2021 at 07:57 PM.
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  #8  
Old 04-29-2021, 10:48 AM
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tgreese tgreese is offline
 
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Location: Medford MA USA
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Quote:
Originally Posted by backroadin'
Just needs some Slick50 rubbed on those and drive in softer dirt... they'll last longer. "WagWag"... love it!

This may be a dumb question, but can you just swap to Bendix brakes (the whole setup) as a last resort?
You'd need a 6-lug Bendix drum. There's nothing that would prevent the 6-lug Delco drums from being compatible AFAIK, but I think it's unlikely they would be.
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Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, Destination ATs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
ECO Green: '15 FCA Jeep Cherokee KL Trailhawk
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