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06-03-2009, 07:30 AM
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#1 |
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Senior Member
Join Date: Apr 2001
Location: Amazonia, Mo. USA
Posts: 2,821
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need part #
Could someone with a 73-up parts book find me the GM # for the front brake backing plate on a 3/4 4x4?
Thanks
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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 |
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06-07-2009, 12:29 AM
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#2 |
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In the Forgotten far North.
 
Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: need part #
What year specifically? Drivers side or passengers side? Let me know and I'll look it up at work on monday.
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1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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06-07-2009, 09:27 AM
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#3 |
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Senior Member
Join Date: Apr 2001
Location: Amazonia, Mo. USA
Posts: 2,821
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Re: need part #
This is what I know. 1/2 and 3/4 ton are different. The 3/4 rotors are much larger so the backing plates are larger.
I think mid 70's plates are the ones I am looking for. 75-78 maybe. The rotors are the same from 71-87. Also the backing plates are the same LH-RH. Only the calipers are different. I will post a pic of the one I am looking for the numbers on. If your book has pics it may help to confirm we are talking the same thing.
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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 |
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06-08-2009, 06:08 PM
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#4 |
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Senior Member
Join Date: Apr 2001
Location: Amazonia, Mo. USA
Posts: 2,821
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Re: need part #
Here are some pics of the problem and fix.
The problem is that the tin shields rust off. And the 72 factory backing plates are partial plates, not full round and 1/4" thick like the newer ones. Also the shape of 1/2 ton and 3/4 are different.
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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 |
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06-09-2009, 11:46 PM
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#5 |
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In the Forgotten far North.
Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
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Re: need part #
Ok I got the shield numbers for you. Unfortunately The books nor the computer showed any difference between 1/2 and 3/4 ton applications. (I work at a long standing GM dealership up here. It's been in business since 1945) So here are the part numbers.....
R/S - 462813 L/S - 462814 Fits 75-78 models. Now the good news.... Both parts are still available thru your local dealership.
__________________
1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015 1990 chevy suburban V2500 5.7L My cluster Mods-Nov 2007 overhead console Stereo install Round 2 Aug 2009 Heated/turn signal mirror upgrade |
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06-10-2009, 08:17 PM
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#6 |
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Senior Member
Join Date: Apr 2001
Location: Amazonia, Mo. USA
Posts: 2,821
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Re: need part #
After some discussion with another board member and some time at the local dealership today, here is what I found.
The numbers BLE 'BURBAN has given are indeed available but I gave him the wrong info. What I am looking for is 1979- 1984 K20 plates. They are no longer available from GM. #'s 14023421-LH 14023422-RH Now that I have the correct years and #'s I will search some other leads that the dealer gave me. Thanks everyone.
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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 |
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06-11-2009, 01:27 PM
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#7 |
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Registered User
Join Date: Nov 2004
Location: Long Island NY
Posts: 293
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Re: need part #
I need a pair of these as well, but I have a 1 ton with a Dana 60 front end. Would they be the same part number as the 3/4 ton?
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I feel sorry for people who don't drink....because when they wake up in the morning, that's the best they're gonna feel all day long!---Frank Sinatra RIP [B]1972 Chevrolet K5 Blazer RIP 1986 GMC Sierra K3500 1TON, Long Box, V8350 RIP 1980 Chevy Silverado C30 Cab and Chassis, 454 TH400HD. RIP [B] 1995 Chevrolet Tahoe 2D [B] |
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06-11-2009, 01:41 PM
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#8 |
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Senior Member
Join Date: Apr 2001
Location: Amazonia, Mo. USA
Posts: 2,821
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Re: need part #
I have no idea. Best thing I found is going to the microfish at the dealership. There you will find pics and part #'s.
__________________
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 |
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