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Old 09-28-2022, 12:47 PM   #1
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Workhorse Brackets

Hello all, im finally converting my 454 p30 chassis to an 8.1! (454 locked up)
I have all of the 8.1 truck/silverado accessories and id like to convert to a workhorse accessory drive.

Im looking for GM 12558927 and W0003928

12558927 is for the A/C and power steering and w0003928 is for the alternator.

I do not need the actual accessories, just the brackets.
[Mod Edit]

Thanks everyone!
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Old 09-28-2022, 01:04 PM   #2
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I'm curious what transmission you will be using.
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Old 09-28-2022, 01:12 PM   #3
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Will the old 454 brackets not fit 8.1 ? Sure looks like they would.. you could try Visone rv salvage yards in ky.. I think I have spelling close..
Good luck and keep us posted
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Old 09-28-2022, 01:20 PM   #4
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Quote:
Originally Posted by Arch Hoagland View Post
I'm curious what transmission you will be using.
The standard allison behind the 8.1
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Old 09-28-2022, 01:22 PM   #5
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Quote:
Originally Posted by donr103 View Post
Will the old 454 brackets not fit 8.1 ? Sure looks like they would.. you could try Visone rv salvage yards in ky.. I think I have spelling close..
Good luck and keep us posted
No, they dont work.

I tried a ton of workhorse partouts/rv partouts including visone and none of them have any.

I found an engine on ebay with the parts needed, asked him to purchase, so weíll see if that leads anywhere.
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Old 09-28-2022, 01:33 PM   #6
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I am not sure.. but just speaking out my butt.. but you pull and pay.. closest to you.. I thought I have seen GM/Chevy use similar brackets on suburban or maybe the k3500.. maybe a trip to car salvage yards and start looking under hoods.. best guess.. if I run into anything I will shout out.. but really the only time I find what I am looking for.. is when I don't need it.. sorry.. maybe someone will come along with better advice.. oh.. try reaching out to CODE2e .. here..
Good luck and keep us posted
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Old 09-28-2022, 03:20 PM   #7
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Have done engine swaps on cars and trucks for decades, including EFI conversions and the like.

You are best off locating a Pick-n-Pull near you that has a 2001-2002 Suburban, Savanna, 2500 or 3500 truck with an 8.1L. The second alternative is looking for seller of a junk truck wit that engine.

I would grab everything you can, including belts, tensioners, brackets, wiring, sensors, etcetera. Better to have too much, verses not having the "one" part that stops the project.



Quote:
Originally Posted by donr103 View Post
I am not sure.. but just speaking out my butt.. but you pull and pay.. closest to you.. I thought I have seen GM/Chevy use similar brackets on suburban or maybe the k3500.. maybe a trip to car salvage yards and start looking under hoods.. best guess.. if I run into anything I will shout out.. but really the only time I find what I am looking for.. is when I don't need it.. sorry.. maybe someone will come along with better advice.. oh.. try reaching out to CODE2e .. here..
Good luck and keep us posted
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Old 09-28-2022, 05:29 PM   #8
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you can search for parts at : www.urvp.com
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Old 09-29-2022, 01:07 AM   #9
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Have you tried this?

GM 12558927 Bracket, genuine OEM part
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Old 09-29-2022, 08:36 AM   #10
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Here's an excellent thread that within it discusses the "top" A/C compressor bracket used vs "bottom".

https://ck5.com/forums/threads/l18-8...thread.308019/

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