Where to buy the big square body shims - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Thealien** · 08-11-2020, 10:29 AM

Like the title asks Where to buy the big square body shims in different thicknesses. I can find plenty of panel shims but not the big square body mount shims?

Thanks
Mark

Mike C · 08-11-2020, 01:01 PM

I made mine out of of 10ga plate cut into a square with hole drilled in middle.

weq92f · 08-11-2020, 04:40 PM

.
I just used huge washers!

But...

https://www.oreillyauto.com/detail/b...6016ct/4243420

-klb

**Thealien** · 08-15-2020, 03:34 PM

Quote:

Originally Posted by weq92f

.
I just used huge washers!

But...

https://www.oreillyauto.com/detail/b...6016ct/4243420

-klb

It doesn't say size anywhere but I think those are fender or cowl shims not the big body shims

weq92f · 08-15-2020, 03:50 PM

Quote:

Originally Posted by Thealien

It doesn't say size anywhere but I think those are fender or cowl shims not the big body shims

This particular one is: Steel Body Shim; 1/8" Thick. 3/8" Slot. 1-1/4" x 1-1/8"

I figured they had an assortment available though.

Hth,

-klb

**HO455** · 08-15-2020, 04:38 PM

Mcmaster Carr has these which are close to the size you stated.

https://www.mcmaster.com/97235K808/

**Thealien** · 08-15-2020, 04:58 PM

Thanks for the suggestions and links.

I am going to try and measure the actual size of the ones already in my Blazer. Really would like some original ones.

**HO455** · 08-15-2020, 06:33 PM

Where are they being used? The large cab mount bushing? I am pretty sure that they factory didn't use different thickness washers or shims. Once the cab was basically dropped on the frame everything else got adjusted to match the cab. GM manufacturing processes were meant to be quick so having a bunch of shims to try and align the cab perfectly didn't make financial sense.
Now in the 50 or so years sense some could have been added after an accident or for other reasons
My Burban had no shims installed when I replaced the body mounts on it. (See my nice collection of rust!) As long as the body on a Suburban is GM saw there was no need for shims. So I can't see how a truck cab would need them from the factory. Unless the body mount was bent during assembly and needed to be cobbled up to get it out of the door.
Now I could be wrong if someone knows for sure please correct my theory.

**Thealien** · 08-15-2020, 06:48 PM

Quote:

Originally Posted by HO455

Where are they being used? The large cab mount bushing? I am pretty sure that they factory didn't use different thickness washers or shims. Once the cab was basically dropped on the frame everything else got adjusted to match the cab. GM manufacturing processes were meant to be quick so having a bunch of shims to try and align the cab perfectly didn't make financial sense.
Now in the 50 or so years sense some could have been added after an accident or for other reasons
My Burban had no shims installed when I replaced the body mounts on it. (See my nice collection of rust!) As long as the body on a Suburban is GM saw there was no need for shims. So I can't see how a truck cab would need them from the factory. Unless the body mount was bent during assembly and needed to be cobbled up to get it out of the door.
Now I could be wrong if someone knows for sure please correct my theory.

Could be a Blazer thing due to the removeable top? I have had 3 Blazers and they all had the same big square shims. It is called out in the assembly manual to get the windshield frame to door gaps right.

**HO455** · 08-15-2020, 09:36 PM

I've never had a big Blazer so I know even less than usual.

You might try reposting in the Blazer section, or have a Moderator move your thread.
Good luck.

**Thealien** · 08-16-2020, 09:56 AM

I tried taking a picture and measuring it but it is in a tight spot. As I said I have had the same square body mount shims on 3 separate Blazer and Jimmy vehicles.

**davischevy** · 08-18-2020, 08:34 PM

They were installed on some C10's also.

I only have one left and was wondering about sources also.

EDIT; As far as I can tell, they were installed on an as needed basis.

**Richard** · 09-03-2020, 04:30 PM

Came across these a few days ago and just now remembered this thread There are other sizes as well https://www.lowes.com/pd/Simpson-Str...E&gclsrc=aw.ds

08-11-2020, 10:29 AM	#1
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,135	Where to buy the big square body shims Like the title asks Where to buy the big square body shims in different thicknesses. I can find plenty of panel shims but not the big square body mount shims? Thanks Mark __________________ Click on my Not really a build thread, yet NOT SO RUST FREE RUST FREE BLAZER LS ENGINE SWAP INFORMATION THREAD BOLT RESTORATIONS 4l60 to an NP205

08-11-2020, 01:01 PM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,727	Re: Where to buy the big square body shims I made mine out of of 10ga plate cut into a square with hole drilled in middle. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

08-11-2020, 04:40 PM	#3
weq92f Registered User Join Date: Oct 2016 Location: Dallas Texas Posts: 3,223	Re: Where to buy the big square body shims . I just used huge washers! But... https://www.oreillyauto.com/detail/b...6016ct/4243420 -klb __________________ 67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold

08-15-2020, 04:38 PM	#6
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,366	Re: Where to buy the big square body shims Mcmaster Carr has these which are close to the size you stated. https://www.mcmaster.com/97235K808/ __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

08-15-2020, 04:58 PM	#7
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,135	Re: Where to buy the big square body shims Thanks for the suggestions and links. I am going to try and measure the actual size of the ones already in my Blazer. Really would like some original ones. __________________ Click on my Not really a build thread, yet NOT SO RUST FREE RUST FREE BLAZER LS ENGINE SWAP INFORMATION THREAD BOLT RESTORATIONS 4l60 to an NP205

08-15-2020, 06:33 PM	#8
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,366	Re: Where to buy the big square body shims Where are they being used? The large cab mount bushing? I am pretty sure that they factory didn't use different thickness washers or shims. Once the cab was basically dropped on the frame everything else got adjusted to match the cab. GM manufacturing processes were meant to be quick so having a bunch of shims to try and align the cab perfectly didn't make financial sense. Now in the 50 or so years sense some could have been added after an accident or for other reasons My Burban had no shims installed when I replaced the body mounts on it. (See my nice collection of rust!) As long as the body on a Suburban is GM saw there was no need for shims. So I can't see how a truck cab would need them from the factory. Unless the body mount was bent during assembly and needed to be cobbled up to get it out of the door. Now I could be wrong if someone knows for sure please correct my theory. Attached Images __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

08-15-2020, 09:36 PM	#10
HO455 Post Whore Join Date: Feb 2016 Location: Portland Oregon Posts: 11,366	Re: Where to buy the big square body shims I've never had a big Blazer so I know even less than usual. You might try reposting in the Blazer section, or have a Moderator move your thread. Good luck. __________________ Thanks to Bob and Jeanie and everyone else at Superior Performance for all their great help. RIP Bob Parks. 1967 Burban (the WMB),1988 S10 Blazer (the Stink10 II),1969 GTO (the Goat), 1970 Javelin, 1952 F2 Ford OHC six 4X4, 29 Model A, 72 Firebird (the DBP Bird). 85 Alfa Romeo If it breaks I didn't want it in the first place The WMB repair thread http://67-72chevytrucks.com/vboard/s...d.php?t=698377

08-16-2020, 09:56 AM	#11
Thealien Senior Member Join Date: Jun 2007 Location: Pine Ridge Florida Posts: 4,135	Re: Where to buy the big square body shims I tried taking a picture and measuring it but it is in a tight spot. As I said I have had the same square body mount shims on 3 separate Blazer and Jimmy vehicles. __________________ Click on my Not really a build thread, yet NOT SO RUST FREE RUST FREE BLAZER LS ENGINE SWAP INFORMATION THREAD BOLT RESTORATIONS 4l60 to an NP205

08-18-2020, 08:34 PM	#12
davischevy Senior Member Join Date: Sep 2008 Location: Harrison, Arkansas Posts: 9,860	Re: Where to buy the big square body shims They were installed on some C10's also. I only have one left and was wondering about sources also. EDIT; As far as I can tell, they were installed on an as needed basis. __________________ other Larry Build thread, Arkansas K10 https://67-72chevytrucks.com/vboard/...=755797&page=5 The ability to speak several languages is an asset, but the ability to keep your mouth shut in any language is priceless. Last edited by davischevy; 08-18-2020 at 08:54 PM.

09-03-2020, 04:30 PM	#13
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,884	Re: Where to buy the big square body shims Came across these a few days ago and just now remembered this thread There are other sizes as well https://www.lowes.com/pd/Simpson-Str...E&gclsrc=aw.ds __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746

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